The darters, anhingas, or snakebirds are mainly
tropical
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in
the Southern Hemisphere at S. The tropics are also referred to ...
waterbirds in the
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Anhingidae, which contains a single genus, ''Anhinga''. There are four living
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
, three of which are very common and widespread while the fourth is rarer and classified as
near-threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify fo ...
by the
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...
. The term ''snakebird'' is usually used without any additions to signify whichever of the completely
allopatric
Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from ...
species occurs in any one region. It refers to their long thin neck, which has a snake-like appearance when they swim with their bodies submerged, or when mated pairs twist it during their bonding
displays
A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people). When the input information that is supplied has an electrical signal the ...
. "Darter" is used with a
geographic
Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and ...
al term when referring to particular species. It alludes to their manner of procuring food, as they impale
fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...
es with their thin, pointed
beak
The beak, bill, or rostrum is an external anatomical structure found mostly in birds, but also in turtles, non-avian dinosaurs and a few mammals. A beak is used for eating, preening, manipulating objects, killing prey, fighting, probing for food ...
. The American darter (''A. anhinga'') is more commonly known as the
anhinga
The anhinga (; ''Anhinga anhinga''), sometimes called snakebird, darter, American darter, or water turkey, is a water bird of the warmer parts of the Americas. The word ''anhinga'' comes from ''a'ñinga'' in the Brazilian Tupi language and means ...
. It is sometimes called "water turkey" in the southern United States; though the anhinga is quite unrelated to the
wild turkey
The wild turkey (''Meleagris gallopavo'') is an Upland game bird, upland ground bird native to North America, one of two extant species of Turkey (bird), turkey and the heaviest member of the order Galliformes. It is the ancestor to the domestic ...
, they are both large, blackish birds with long tails that are sometimes hunted for food.
[Answers.com ]009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
BLI (2009), Myers et al. 009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
/ref>
Description
Anhingidae are large birds with sexually dimorphic
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...
plumage
Plumage ( "feather") is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, ...
. They measure about in length, with a wingspan around , and weigh some . The males have black and dark-brown plumage, a short erectile crest on the nape and a larger bill than the female. The females have much paler plumage, especially on the neck and underparts, and are a bit larger overall. Both have grey stippling on long scapular
The scapular (from Latin ''wikt:scapula#Latin, scapulae'', "shoulders") is a Western Christianity, Western Christian garment suspended from the shoulders. There are two types of scapulars, the Monasticism, monastic and Catholic devotions, devot ...
s and upper wing covert
A covert feather or tectrix on a bird is one of a set of feathers, called coverts (or ''tectrices''), which, as the name implies, cover other feathers. The coverts help to smooth airflow over the wings and tail. Ear coverts
The ear coverts are sm ...
s. The sharply pointed bill
Bill(s) may refer to:
Common meanings
* Banknote, paper cash (especially in the United States)
* Bill (law), a proposed law put before a legislature
* Invoice, commercial document issued by a seller to a buyer
* Bill, a bird or animal's beak
Plac ...
has serrated edges, a desmognathous palate
The palate () is the roof of the mouth in humans and other mammals. It separates the oral cavity from the nasal cavity.
A similar structure is found in crocodilians, but in most other tetrapods, the oral and nasal cavities are not truly sepa ...
and no external nostril
A nostril (or naris , plural ''nares'' ) is either of the two orifices of the nose. They enable the entry and exit of air and other gasses through the nasal cavities. In birds and mammals, they contain branched bones or cartilages called turbi ...
s. The darters have completely webbed feet
The webbed foot is a specialized limb with interdigital membranes (webbings) that aids in aquatic locomotion, present in a variety of tetrapod vertebrates. This adaptation is primarily found in semiaquatic species, and has convergently evolved m ...
, and their legs are short and set far back on the body.
There is no eclipse plumage
Plumage ( "feather") is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, ...
, but the bare parts vary in color around the year. During breeding, however, their small gular sac
Gular skin (throat skin), in ornithology, is an area of featherless skin on birds that joins the lower mandible of the beak (or ''bill'') to the bird's neck. Other vertebrate taxa may have a comparable anatomical structure that is referred to as e ...
changes from pink or yellow to black, and the bare facial skin, otherwise yellow or yellow-green, turns turquoise
Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula . It is rare and valuable in finer grades and has been prized as a gemstone and ornamental stone for thousands of yea ...
. The iris
Iris most often refers to:
*Iris (anatomy), part of the eye
*Iris (mythology), a Greek goddess
* ''Iris'' (plant), a genus of flowering plants
* Iris (color), an ambiguous color term
Iris or IRIS may also refer to:
Arts and media
Fictional ent ...
changes in color between yellow, red or brown seasonally. The young hatch naked, but soon grow white or tan down.[Myers et al. ]009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
/ref>
Darter vocalizations include a clicking or rattling when flying or perching. In the nesting colonies, adults communicate with croaks, grunts or rattles. During breeding, adults sometimes give a ''caw'' or sighing or hissing calls. Nestling
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight s ...
s communicate with squealing or squawking calls.
Distribution and ecology
Darters are mostly tropical
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in
the Southern Hemisphere at S. The tropics are also referred to ...
in distribution, ranging into subtropical
The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Geographical z ...
and barely into warm temperate
In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...
regions. They typically inhabit fresh water
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...
lakes, rivers, marshes, swamps, and are less often found along the seashore in brackish
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuari ...
estuaries, bays, lagoon
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') a ...
s and mangrove
A mangrove is a shrub or tree that grows in coastal saline water, saline or brackish water. The term is also used for tropical coastal vegetation consisting of such species. Mangroves are taxonomically diverse, as a result of convergent evoluti ...
. Most are sedentary and do not migrate; the populations in the coolest parts of the range may migrate however. Their preferred mode of flight
Flight or flying is the process by which an object moves through a space without contacting any planetary surface, either within an atmosphere (i.e. air flight or aviation) or through the vacuum of outer space (i.e. spaceflight). This can be a ...
is soaring
Soaring may refer to:
* Gliding, in which pilots fly unpowered aircraft known as gliders or sailplanes
* Lift (soaring), a meteorological phenomenon used as an energy source by some aircraft and birds
* ''Soaring'' (magazine), a magazine produced ...
and gliding
Gliding is a recreational activity and competitive air sport in which pilots fly unpowered aircraft known as gliders or sailplanes using naturally occurring currents of rising air in the atmosphere to remain airborne. The word ''soaring'' is al ...
; in flapping
Flapping or tapping, also known as alveolar flapping, intervocalic flapping, or ''t''-voicing, is a phonological process found in many varieties of English, especially North American, Cardiff, Ulster, Australian and New Zealand English, whereby ...
flight they are rather cumbersome. On dry land, darters walk with a high-stepped gait, wings often spread for balance, just like pelican
Pelicans (genus ''Pelecanus'') are a genus of large water birds that make up the family Pelecanidae. They are characterized by a long beak and a large throat pouch used for catching prey and draining water from the scooped-up contents before s ...
s do. They tend to gather in flocks – sometimes up to about 100 birds – and frequently associate with stork
Storks are large, long-legged, long-necked wading birds with long, stout bills. They belong to the family called Ciconiidae, and make up the order Ciconiiformes . Ciconiiformes previously included a number of other families, such as herons an ...
s, heron
The herons are long-legged, long-necked, freshwater and coastal birds in the family Ardeidae, with 72 recognised species, some of which are referred to as egrets or bitterns rather than herons. Members of the genera ''Botaurus'' and ''Ixobrychus ...
s or ibis
The ibises () (collective plural ibis; classical plurals ibides and ibes) are a group of long-legged wading birds in the family Threskiornithidae, that inhabit wetlands, forests and plains. "Ibis" derives from the Latin and Ancient Greek word f ...
es, but are highly territorial on the nest: despite being a colonial nester, breeding pairs – especially males – will stab at any other bird that ventures within reach of their long neck and bill. The Oriental darter
The Oriental darter (''Anhinga melanogaster'') is a water bird of tropical South Asia and Southeast Asia. It has a long and slender neck with a straight, pointed bill and, like the cormorant, it hunts for fish while its body is submerged in water ...
(''A. melanogaster sensu stricto
''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular co ...
'') is a Near Threatened
A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify fo ...
species. Habitat destruction
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...
along with other human interferences (such as egg collection and pesticide
Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampri ...
overuse) are the main reasons for declining darter populations.
Diet
Darters feed mainly on mid-sized fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...
; far more rarely, they eat other aquatic vertebrate
Vertebrates () comprise all animal taxa within the subphylum Vertebrata () ( chordates with backbones), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, ...
s and large invertebrate
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...
s of comparable size. These birds are foot-propelled divers which quietly stalk and ambush their prey; then they use their sharply pointed bill
Bill(s) may refer to:
Common meanings
* Banknote, paper cash (especially in the United States)
* Bill (law), a proposed law put before a legislature
* Invoice, commercial document issued by a seller to a buyer
* Bill, a bird or animal's beak
Plac ...
to impale the food animal. They do not dive deep but make use of their low buoyancy made possible by wettable plumage, small air sacs and denser bones. On the underside of the cervical vertebra
In tetrapods, cervical vertebrae (singular: vertebra) are the vertebrae of the neck, immediately below the skull. Truncal vertebrae (divided into thoracic and lumbar vertebrae in mammals) lie caudal (toward the tail) of cervical vertebrae. In sau ...
e 5–7 is a keel, which allows for muscle
Skeletal muscles (commonly referred to as muscles) are organs of the vertebrate muscular system and typically are attached by tendons to bones of a skeleton. The muscle cells of skeletal muscles are much longer than in the other types of muscl ...
s to attach to form a hinge
A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation: all other ...
-like mechanism that can project the neck, head and bill forward like a throwing spear. After they have stabbed the prey, they return to the surface where they toss their food into the air and catch it again, so that they can swallow it head-first. Like cormorant
Phalacrocoracidae is a family of approximately 40 species of aquatic birds commonly known as cormorants and shags. Several different classifications of the family have been proposed, but in 2021 the IOC adopted a consensus taxonomy of seven ge ...
s, they have a vestigial preen gland
The uropygial gland, informally known as the preen gland or the oil gland, is a bilobed sebaceous gland possessed by the majority of birds used to distribute the gland's oil through the plumage by means of preening. It is located dorsally at the ...
and their plumage gets wet during diving. To dry their feathers after diving, darters move to a safe location and spread their wings. Darters go through a synchronous moult
In biology, moulting (British English), or molting (American English), also known as sloughing, shedding, or in many invertebrates, ecdysis, is the manner in which an animal routinely casts off a part of its body (often, but not always, an outer ...
of all their primaries and secondaries making them temporarily flightless, although it is possible that some individuals go through incomplete moults.
Predation
Predator
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...
s of darters are mainly large carnivorous
A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other sof ...
birds, including passerines
A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by th ...
like the Australian raven
The Australian raven (''Corvus coronoides'') is a passerine bird in the genus ''Corvus'' native to much of southern and northeastern Australia. Measuring in length, it has all-black plumage, beak and mouth, as well as strong grey-black legs and ...
(''Corvus coronoides'') and house crow
The house crow (''Corvus splendens''), also known as the Indian, greynecked, Ceylon or Colombo crow, is a common bird of the crow family that is of Asian origin but now found in many parts of the world, where they arrived assisted by shipping. ...
(''Corvus splendens''), and birds of prey
Birds of prey or predatory birds, also known as raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates (mainly mammals, reptiles and other smaller birds). In addition to speed and strength, these predators ...
such as marsh harrier
The marsh harriers are birds of prey of the harrier subfamily. They are medium-sized raptors and the largest and broadest-winged harriers. Most of them are associated with marshland and dense reedbeds. They are found almost worldwide, excluding ...
s (''Circus aeruginosus'' complex) or Pallas's fish eagle
Pallas's fish eagle (''Haliaeetus leucoryphus''), also known as Pallas's sea eagle or band-tailed fish eagle, is a large, brownish sea eagle. It breeds in the east Palearctic in Kazakhstan, Russia, Tajikistan, Turkmenistan, Uzbekistan, Mongolia, C ...
(''Haliaeetus leucoryphus''). Predation by ''Crocodylus
''Crocodylus'' is a genus of true crocodiles in the family Crocodylidae.
Taxonomy
The generic name, ''Crocodylus'', was proposed by Josephus Nicolaus Laurenti in 1768. ''Crocodylus'' contains 13–14 extant (living) species and 5 extinct species ...
'' crocodile
Crocodiles (family (biology), family Crocodylidae) or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. The term crocodile is sometimes used even more loosely to inclu ...
s has also been noted. But many would-be predators know better than to try to catch a darter. The long neck and pointed bill in combination with the "darting" mechanism make the birds dangerous even to larger carnivorous mammal
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...
s, and they will actually move toward an intruder to attack rather than defending passively or fleeing.[Kennedy et al. (1996), Myers et al. ]009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
/ref>
Breeding
They usually breed in colonies, occasionally mixed with cormorant
Phalacrocoracidae is a family of approximately 40 species of aquatic birds commonly known as cormorants and shags. Several different classifications of the family have been proposed, but in 2021 the IOC adopted a consensus taxonomy of seven ge ...
s or herons. The darters pair bond
In biology, a pair bond is the strong affinity that develops in some species between a mating pair, often leading to the production and rearing of offspring and potentially a lifelong bond. Pair-bonding is a term coined in the 1940s that is freque ...
monogamous
Monogamy ( ) is a form of Dyad (sociology), dyadic Intimate relationship, relationship in which an individual has only one Significant other, partner during their lifetime. Alternately, only one partner at any one time (Monogamy#Serial monogamy, ...
ly at least for a breeding season. There are many different types of displays
A display device is an output device for presentation of information in visual or tactile form (the latter used for example in tactile electronic displays for blind people). When the input information that is supplied has an electrical signal the ...
used for mating. Males display to attract females by raising (but not stretching) their wings to wave them in an alternating fashion, bowing and snapping the bill, or giving twigs to potential mates. To strengthen the pair bond, partners rub their bills or wave, point upwards or bow their necks in unison. When one partner comes to relieve the other at the nest, males and females use the same display the male employs during courtship; during changeovers, the birds may also "yawn
A yawn is a reflex lasting 4-7 seconds, and is characterized by a long inspiratory phase with gradual mouth gaping, followed by a brief climax (or acme) with muscle stretching, and a rapid expiratory phase with muscle relaxation. For fish an ...
" at each other.
Breeding is seasonal (peaking in March/April) at the northern end of their range; elsewhere they can be found breeding all year round. The nests
A nest is a structure built for certain animals to hold eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of organic materi ...
are made of twigs and lined with leaves; they are built in trees or reeds, usually near water. Typically, the male gathers nesting material and brings it to the female, which does most of the actual construction work. Nest construction takes only a few days (about three at most), and the pairs copulate
Sexual intercourse (or coitus or copulation) is a sexual activity typically involving the insertion and thrusting of the penis into the vagina for sexual pleasure or reproduction.Sexual intercourse most commonly means penile–vaginal penetr ...
at the nest site. The clutch
A clutch is a mechanical device that engages and disengages power transmission, especially from a drive shaft to a driven shaft. In the simplest application, clutches connect and disconnect two rotating shafts (drive shafts or line shafts). ...
size is two to six eggs
Humans and human ancestors have scavenged and eaten animal eggs for millions of years. Humans in Southeast Asia had domesticated chickens and harvested their eggs for food by 1,500 BCE. The most widely consumed eggs are those of fowl, especial ...
(usually about four) which have a pale green color. The eggs are laid within 24–48 hours and incubated for 25 to 30 days, starting after the first has been laid; they hatch asynchronously. To provide warmth to the eggs, the parents will cover them with their large webbed feet, because like their relatives they lack a brood patch. The last young to hatch will usually starve in years with little food available. Bi-parental care
Parenting or child rearing promotes and supports the physical fitness, physical, emotional, Social change, social, spiritual and intellectual development of a child from infant, infancy to adulthood. Parenting refers to the intricacies of raisi ...
is given and the young are considered altricial
In biology, altricial species are those in which the young are underdeveloped at the time of birth, but with the aid of their parents mature after birth. Precocial species are those in which the young are relatively mature and mobile from the mome ...
. They are fed by regurgitation of partly digested food when young, switching to entire food items as they grow older. After fledging
Fledging is the stage in a flying animal's life between hatching or birth and becoming capable of flight.
This term is most frequently applied to birds, but is also used for bats. For altricial birds, those that spend more time in vulnerable c ...
, the young are fed for about two more weeks while they learn to hunt for themselves.
These birds reach sexual maturity by about two years, and generally live to around nine years. The maximum possible lifespan of darters seems to be about sixteen years.
Darter eggs are edible and considered delicious by some; they are locally collected by humans as food. The adults are also eaten occasionally, as they are rather meaty birds (comparable to a domestic duck
The domestic duck or domestic mallard (''Anas platyrhynchos domesticus'') is a subspecies of mallard that has been domesticated by humans and raised for meat, eggs, and down feathers. A few are also kept for show, as pets, or for their ornamenta ...
); like other fish-eating birds such as cormorants or seaduck
The sea ducks (''Mergini'') are a tribe of the duck subfamily of birds, the Anatinae. The taxonomy of this group is incomplete. Some authorities separate the group as a subfamily, while others remove some genera. Most species within the group sp ...
s they do not taste particularly good though. Darter eggs and nestling
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight s ...
s are also collected in a few places to raise the young. Sometimes this is done for food, but some nomad
A nomad is a member of a community without fixed habitation who regularly moves to and from the same areas. Such groups include hunter-gatherers, pastoral nomads (owning livestock), tinkers and trader nomads. In the twentieth century, the popu ...
s in Assam
Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur ...
and Bengal
Bengal ( ; bn, বাংলা/বঙ্গ, translit=Bānglā/Bôngô, ) is a geopolitical, cultural and historical region in South Asia, specifically in the eastern part of the Indian subcontinent at the apex of the Bay of Bengal, predom ...
train tame darters to be employed as in cormorant fishing
Cormorant fishing is a traditional fishing technique in which fishermen use trained cormorants to catch fish in rivers. Historically, cormorant fishing has taken place in Japan and China, as well as Greece, North Macedonia, and briefly, England an ...
. With an increasing number of nomads settling down in recent decades, this cultural heritage
Cultural heritage is the heritage of tangible and intangible heritage assets of a group or society that is inherited from past generations. Not all heritages of past generations are "heritage"; rather, heritage is a product of selection by soci ...
is in danger of being lost. On the other hand, as evidenced by the etymology
Etymology ()The New Oxford Dictionary of English (1998) – p. 633 "Etymology /ˌɛtɪˈmɒlədʒi/ the study of the class in words and the way their meanings have changed throughout time". is the study of the history of the Phonological chan ...
of "anhinga" detailed above, the Tupi Tupi may refer to:
* Tupi people of Brazil
* Tupi or Tupian languages, spoken in South America
** Tupi language, an extinct Tupian language spoken by the Tupi people
* Tupi oil field off the coast of Brazil
* Tupi Paulista, a Brazilian municipalit ...
seem to have considered the anhinga a kind of bird of ill omen
An omen (also called ''portent'') is a phenomenon that is believed to foretell the future, often signifying the advent of change. It was commonly believed in ancient times, and still believed by some today, that omens bring divine messages fr ...
.
Systematics and evolution
The genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
''Anhinga'' was introduced by the French zoologist Mathurin Jacques Brisson
Mathurin Jacques Brisson (; 30 April 1723 – 23 June 1806) was a French zoologist and natural philosopher.
Brisson was born at Fontenay-le-Comte. The earlier part of his life was spent in the pursuit of natural history; his published works ...
in 1760, with the anhinga
The anhinga (; ''Anhinga anhinga''), sometimes called snakebird, darter, American darter, or water turkey, is a water bird of the warmer parts of the Americas. The word ''anhinga'' comes from ''a'ñinga'' in the Brazilian Tupi language and means ...
or American darter (''Anhinga anhinga'') as the type species
In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...
. ''Anhinga'' is derived from the Tupi Tupi may refer to:
* Tupi people of Brazil
* Tupi or Tupian languages, spoken in South America
** Tupi language, an extinct Tupian language spoken by the Tupi people
* Tupi oil field off the coast of Brazil
* Tupi Paulista, a Brazilian municipalit ...
''ajíŋa'' (also transcribed ''áyinga'' or ''ayingá''), which in local mythology
Myth is a folklore genre consisting of narratives that play a fundamental role in a society, such as foundational tales or origin myths. Since "myth" is widely used to imply that a story is not objectively true, the identification of a narrat ...
refers to a malevolent demon
A demon is a malevolent supernatural entity. Historically, belief in demons, or stories about demons, occurs in religion, occultism, literature, fiction, mythology, and folklore; as well as in media such as comics, video games, movies, ani ...
ic forest spirit; it is often translated as "devil bird". The name changed to ''anhingá'' or ''anhangá'' as it was transferred to the Tupi–Portuguese
Portuguese may refer to:
* anything of, from, or related to the country and nation of Portugal
** Portuguese cuisine, traditional foods
** Portuguese language, a Romance language
*** Portuguese dialects, variants of the Portuguese language
** Portu ...
Língua Geral
Língua Geral (, ''General Language'') is the name of two distinct lingua francas, spoken in Brazil: the '' Língua Geral Paulista'' (''Tupi Austral'', or Southern Tupi), which was spoken in the region of Paulistania but is now dead, and the ''Lí ...
. However, in its first documented use as an English term in 1818, it referred to an Old World
The "Old World" is a term for Afro-Eurasia that originated in Europe , after Europeans became aware of the existence of the Americas. It is used to contrast the continents of Africa, Europe, and Asia, which were previously thought of by the ...
darter. Ever since, it has also been used for the modern genus ''Anhinga'' as a whole.
This family is very closely related to the other families
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Ideal ...
in the suborder
Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...
Sulae, i.e. the Phalacrocoracidae
Phalacrocoracidae is a family of approximately 40 species of aquatic birds commonly known as cormorants and shags. Several different classifications of the family have been proposed, but in 2021 the IOC adopted a consensus taxonomy of seven gen ...
(cormorants and shags) and the Sulidae
The bird family Sulidae comprises the gannets and boobies. Collectively called sulids, they are medium-large coastal seabirds that plunge-dive for fish and similar prey. The 10 species in this family are often considered congeneric in older sou ...
(gannets and boobies). Cormorants and darters are extremely similar as regards their body and leg skeleton
A skeleton is the structural frame that supports the body of an animal. There are several types of skeletons, including the exoskeleton, which is the stable outer shell of an organism, the endoskeleton, which forms the support structure inside ...
s and may be sister taxa
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree.
Definition
The expression is most easily illustrated by a cladogram:
Taxon A and ...
. In fact, several darter fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...
s were initially believed to be cormorants or shags (see below). Some earlier authors included the darters in the Phalacrocoracidae as subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...
Anhingina, but this is nowadays generally considered overlumping. However, as this agrees quite well with the fossil evidence, some unite the Anhingidae and Phalacrocoracidae in a superfamily
SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...
Phalacrocoracoidea.
The Sulae are also united by their characteristic display
Display may refer to:
Technology
* Display device, output device for presenting information, including:
** Cathode ray tube, video display that provides a quality picture, but can be very heavy and deep
** Electronic visual display, output devi ...
behavior, which agrees with the phylogeny
A phylogenetic tree (also phylogeny or evolutionary tree Felsenstein J. (2004). ''Inferring Phylogenies'' Sinauer Associates: Sunderland, MA.) is a branching diagram or a tree showing the evolutionary relationships among various biological spec ...
as laid out by anatomical
Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having it ...
and DNA sequence
DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA. It includes any method or technology that is used to determine the order of the four bases: adenine, guanine, cytosine, and thymine. Th ...
data. While the darters' lack of many display behaviors is shared with gannets (and that of a few with cormorants), these are all symplesiomorph
In phylogenetics, a plesiomorphy ("near form") and symplesiomorphy are synonyms for an ancestral Phenotypic trait, character shared by all members of a clade, which does not distinguish the clade from other clades.
Plesiomorphy, symplesiomorph ...
ies that are absent in frigatebird
Frigatebirds are a family of seabirds called Fregatidae which are found across all tropical and subtropical oceans. The five extant species are classified in a single genus, ''Fregata''. All have predominantly black plumage, long, deeply forked ...
s, tropicbird
Tropicbirds are a family, Phaethontidae, of tropical pelagic seabirds. They are the sole living representatives of the order Phaethontiformes. For many years they were considered part of the Pelecaniformes, but genetics indicates they are most cl ...
s and pelican
Pelicans (genus ''Pelecanus'') are a genus of large water birds that make up the family Pelecanidae. They are characterized by a long beak and a large throat pouch used for catching prey and draining water from the scooped-up contents before s ...
s also. Like cormorants but unlike other birds, darters use their hyoid bone to stretch the gular sac
Gular skin (throat skin), in ornithology, is an area of featherless skin on birds that joins the lower mandible of the beak (or ''bill'') to the bird's neck. Other vertebrate taxa may have a comparable anatomical structure that is referred to as e ...
in display. Whether the pointing display of mates is another synapomorphy
In phylogenetics, an apomorphy (or derived trait) is a novel character or character state that has evolved from its ancestral form (or plesiomorphy). A synapomorphy is an apomorphy shared by two or more taxa and is therefore hypothesized to have ...
of darters and cormorants that was dropped again in some of the latter, or whether it evolved independently in darters and those cormorants that do it, is not clear. The male raised-wing display seems to be a synapomorphy of the Sulae; like almost all cormorants and shags but unlike almost all gannets and boobies, darters keep their wrist
In human anatomy, the wrist is variously defined as (1) the Carpal bones, carpus or carpal bones, the complex of eight bones forming the proximal skeletal segment of the hand; "The wrist contains eight bones, roughly aligned in two rows, known ...
s bent as they lift the wings in display, but their alternating wing-waving, which they also show before take-off, is unique. That they often balance with their outstretched wings during walking is probably an autapomorph
In phylogenetics, an autapomorphy is a distinctive feature, known as a derived trait, that is unique to a given taxon. That is, it is found only in one taxon, but not found in any others or outgroup taxa, not even those most closely related to t ...
y of darters, necessitated by their being plumper than the other Sulae.
The Sulae were traditionally included in the Pelecaniformes
The Pelecaniformes are an order of medium-sized and large waterbirds found worldwide. As traditionally—but erroneously—defined, they encompass all birds that have feet with all four toes webbed. Hence, they were formerly also known by such ...
, then a paraphyletic
In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be pa ...
group of "higher waterbird
Aequornithes (, from Latin ''aequor'', expanse of water + Greek ''ornithes'', birds), or core water birds are defined as "the least inclusive clade containing Gaviidae and Phalacrocoracidae".
The monophyly of the group is currently supported b ...
s". The supposed traits uniting them, like all-webbed toes and a bare gular sac, are now known to be convergent, and pelicans are apparently closer relatives of stork
Storks are large, long-legged, long-necked wading birds with long, stout bills. They belong to the family called Ciconiidae, and make up the order Ciconiiformes . Ciconiiformes previously included a number of other families, such as herons an ...
s than of the Sulae. Hence, the Sulae and the frigatebirds – and some prehistoric
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of ...
relatives – are increasingly separated as the Suliformes
The order Suliformes (, dubbed "Phalacrocoraciformes" by ''Christidis & Boles 2008'') is an order recognised by the International Ornithological Congress, International Ornithologist's Union. In regard to the recent evidence that the traditional ...
, which is sometimes dubbed "Phalacrocoraciformes".
Living species
There are four living species of darters recognized, all in the genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
''Anhinga'', although the Old World ones were often lumped together as subspecies of ''A. melanogaster''. They may form a superspecies with regard to the more distinct anhinga:
* Anhinga
The anhinga (; ''Anhinga anhinga''), sometimes called snakebird, darter, American darter, or water turkey, is a water bird of the warmer parts of the Americas. The word ''anhinga'' comes from ''a'ñinga'' in the Brazilian Tupi language and means ...
or American darter, ''Anhinga anhinga''
* Oriental darter
The Oriental darter (''Anhinga melanogaster'') is a water bird of tropical South Asia and Southeast Asia. It has a long and slender neck with a straight, pointed bill and, like the cormorant, it hunts for fish while its body is submerged in water ...
or Indian darter, ''Anhinga melanogaster''
* African darter
The African darter (''Anhinga rufa''), sometimes called the snakebird, is a water bird of sub-Saharan Africa and Iraq.
Taxonomy
The African darter is a member of the darter family, Anhingidae, and is closely related to American (''Anhinga anh ...
, ''Anhinga rufa''
* Australasian darter
The Australasian darter or Australian darter (''Anhinga novaehollandiae'') is a species of bird in the darter family, Anhingidae. It is found in Australia, Indonesia, and Papua New Guinea. It weighs around 2.6 kg and spans 86–94 cm ( ...
or Australian darter, ''Anhinga novaehollandiae''
Extinct "darters" from Mauritius
Mauritius ( ; french: Maurice, link=no ; mfe, label=Mauritian Creole, Moris ), officially the Republic of Mauritius, is an island nation in the Indian Ocean about off the southeast coast of the African continent, east of Madagascar. It incl ...
and Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
known only from bones were described as ''Anhinga nana'' ("Mauritian darter") and ''Anhinga parva''. But these are actually misidentified bones of the long-tailed cormorant (''Microcarbo/Phalacrocorax africanus'') and the little pied cormorant
The little pied cormorant, little shag or kawaupaka (''Microcarbo melanoleucos'') is a common Australasian waterbird, found around the coasts, islands, estuaries, and inland waters of Australia, New Guinea, New Zealand, Thailand, Myanmar, Singapo ...
(''M./P. melanoleucos''), respectively. In the former case, however, the remains are larger than those of the geographically closest extant population of long-tailed cormorants on Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...
: they thus might belong to an extinct subspecies (Mauritian cormorant), which would have to be called ''Microcarbo africanus nanus'' (or ''Phalacrocorax a. nanus'') – quite ironically, as the Latin
Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...
term ''nanus'' means dwarf. The Late Pleistocene
The Late Pleistocene is an unofficial Age (geology), age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a Stratigraphy, stratigraphic perspective. It is intended to be the fourth division of ...
''Anhinga laticeps'' is not specifically distinct from the Australasian darter; it might have been a large paleosubspecies
A chronospecies is a species derived from a sequential development pattern that involves continual and uniform changes from an extinct ancestral form on an evolutionary scale. The sequence of alterations eventually produces a population that is p ...
of the last ice age.
Fossil record
The fossil record
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...
of the Anhingidae is rather dense, but very apomorph
In phylogenetics, an apomorphy (or derived trait) is a novel character or character state that has evolved from its ancestral form (or plesiomorphy). A synapomorphy is an apomorphy shared by two or more taxa and is therefore hypothesized to have ...
ic already and appears to be lacking its base. The other families placed in the Phalacrocoraciformes
The order Suliformes (, dubbed "Phalacrocoraciformes" by ''Christidis & Boles 2008'') is an order recognised by the International Ornithologist's Union. In regard to the recent evidence that the traditional Pelecaniformes is polyphyletic, it has ...
sequentially appear throughout the Eocene
The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene' ...
, the most distinct – frigatebirds – being known since almost 50 Ma (million years ago
The abbreviation Myr, "million years", is a unit of a quantity of (i.e. ) years, or 31.556926 teraseconds.
Usage
Myr (million years) is in common use in fields such as Earth science and cosmology. Myr is also used with Mya (million years ago). ...
) and probably of Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch (geology), epoch that lasted from about 66 to 56 mya (unit), million years ago (mya). It is the first epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), E ...
origin. With fossil gannets being known since the mid-Eocene (c. 40 Ma) and fossil cormorants appearing soon thereafter, the origin of the darters as a distinct lineage was presumably around 50–40 Ma, maybe a bit earlier.
Fossil Anhingidae are known since the Early Miocene
The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene Epoch made up of two stages: the Aquitanian and Burdigalian stages.
The sub-epoch lasted from 23.03 ± 0.05 Ma to 15.97 ± 0.05 Ma (million years ago). It was prece ...
; a number of prehistoric
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of ...
darters similar to those still alive have been described, as well as some more distinct genera now extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
. The diversity was highest in South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
, and thus it is likely that the family originated there. Some of the genera which ultimately became extinct were very large, and a tendency to become flightless
Flightless birds are birds that through evolution lost the ability to fly. There are over 60 extant species, including the well known ratites (ostriches, emu, cassowaries, rheas, and kiwi) and penguins. The smallest flightless bird is the ...
has been noted in prehistoric darters. Their distinctness has been doubted, but this was due to the supposed ''"Anhinga" fraileyi'' being rather similar to ''Macranhinga'', rather than due to them resembling the living species:
* '' Meganhinga'' Alvarenga, 1995 (Early Miocene of Chile)
* " Paranavis" (Middle/Late Miocene of Paraná, Argentina) – a ''nomen nudum
In taxonomy, a ''nomen nudum'' ('naked name'; plural ''nomina nuda'') is a designation which looks exactly like a scientific name of an organism, and may have originally been intended to be one, but it has not been published with an adequate descr ...
''
* '' Macranhinga'' Noriega, 1992 (Middle/Late Miocene – Late Miocene/Early Pliocene of SC South America) – may include ''"Anhinga" fraileyi''
* '' Giganhinga'' Rinderknecht & Noriega, 2002 (Late Pliocene/Early Pleistocene of Uruguay)
;''Anhinga''
Prehistoric members of ''Anhinga'' were presumably distributed in similar climate
Climate is the long-term weather pattern in an area, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteorologic ...
s as today, ranging into Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
in the hotter and wetter Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...
. With their considerable stamina and continent-wide distribution abilities (as evidenced by the anhinga and the Old World superspecies), the smaller lineage has survived for over 20 Ma. As evidenced by the fossil species' biogeography
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, ...
centered around the equator
The equator is a circle of latitude, about in circumference, that divides Earth into the Northern and Southern hemispheres. It is an imaginary line located at 0 degrees latitude, halfway between the North and South poles. The term can als ...
, with the younger species ranging eastwards out of the Americas, the Hadley cell
The Hadley cell, named after George Hadley, is a global-scale tropical atmospheric circulation that features air rising near the equator, flowing poleward at a height of 10 to 15 kilometers above the earth's surface, descending in the subtropics, ...
seems to have been the main driver of the genus' success and survival:
* '' Anhinga walterbolesi'' Worthy, 2012 (Late Oligocene to Early Miocene of central Australia
* ''Anhinga subvolans'' (Brodkorb, 1956) (Early Miocene of Thomas Farm, US) – formerly in ''Phalacrocorax
''Phalacrocorax'' is a genus of fish-eating birds in the cormorant family Phalacrocoracidae. Members of this genus are also known as the Old World cormorants.
Taxonomy
The genus ''Phalacrocorax'' was introduced by the French zoologist Mathurin ...
''
* ''Anhinga'' cf. ''grandis'' (Middle Miocene of Colombia –? Late Pliocene of SC South America)
* ''Anhinga'' sp. (Sajóvölgyi Middle Miocene of Mátraszõlõs, Hungary) – ''A. pannonica''?
* ''"Anhinga" fraileyi'' Campbell, 1996 (Late Miocene –? Early Pliocene of SC South America) – may belong in ''Macranhinga''
* ''Anhinga pannonica
''Anhinga pannonica'' is an extinct species of darter from the Miocene of Europe and Africa. Described in 1916, ''A. pannonica'' is the only species of darter to have existed in Europe and is notably larger than most extant species, with an estima ...
'' Lambrecht, 1916 (Late Miocene of C Europe ?and Tunisia, East Africa, Pakistan and Thailand –? Sahabi Early Pliocene of Libya)
* ''Anhinga minuta'' Alvarenga & Guilherme, 2003 (Solimões Late Miocene/Early Pliocene of SC South America)
* ''Anhinga grandis'' Martin & Mengel, 1975 (Late Miocene –? Late Pliocene of US)
* ''Anhinga malagurala'' Mackness, 1995 (Allingham Early Pliocene of Charters Towers, Australia)
* ''Anhinga'' sp. (Early Pliocene of Bone Valley, US) – ''A. beckeri''?Ulna
The ulna (''pl''. ulnae or ulnas) is a long bone found in the forearm that stretches from the elbow to the smallest finger, and when in anatomical position, is found on the medial side of the forearm. That is, the ulna is on the same side of t ...
fossils larger than ''A. anhinga'': Becker (1986)
* ''Anhinga hadarensis'' Brodkorb & Mourer-Chauviré, 1982 (Late Pliocene/Early Pleistocene of E Africa)
* ''Anhinga beckeri'' Emslie, 1998 (Early – Late Pleistocene of SE US)
'' Protoplotus'', a small Paleogene
The Paleogene ( ; British English, also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period, geologic period and system that spans 43 million years from the end of the Cretaceous Period million yea ...
phalacrocoraciform from Sumatra
Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the sixth-largest island in the world at 473,481 km2 (182,812 mi.2), not including adjacent i ...
, was in old times considered a primitive darter. However, it is also placed in its own family ( Protoplotidae) and might be a basal member of the Sulae and/or close to the common ancestor of cormorants and darters.[Olson (1985): p.206, Mackness (1995), Mayr (2009): pp.62–63]
References
Sources
*
* AnAge 009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
br>''Anhinga'' longevity data
Retrieved 2009-SEP-09.
* Answers.com 009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
br>darter
''In: Columbia Electronic Encyclopedia'' (6th ed.). Columbia University Press. Retrieved 2009-Sep-09.
*
*
*
*
*
* Christidis, Les & Boles, Walter E. (2008)
''Systematics and Taxonomy of Australian Birds''
CSIRO Publishing, CollingwoodVictoria, Australia.
* Cione, Alberto Luis; de las Mercedes Azpelicueta, María; Bond, Mariano; Carlini, Alfredo A.; Casciotta, Jorge R.; Cozzuol, Mario Alberto; de la Fuente, Marcelo; Gasparini, Zulma; Goin, Francisco J.; Noriega, Jorge; Scillatoyané, Gustavo J.; Soibelzon, Leopoldo; Tonni, Eduardo Pedro; Verzi, Diego & Guiomar Vucetich, María (2000)
Miocene vertebrates from Entre Ríos province, eastern Argentina
nglish with Spanish abstract''In:'' Aceñolaza, F.G. & Herbst, R. (eds.): El Neógeno de Argentina. ''INSUGEO Serie Correlación Geológica'' 14: 191–237.
*
* Jobling, James A. (1991): ''A Dictionary of Scientific Bird Names''. Oxford University Press, Oxford, UK.
*
*
*
* Mayr, Gerald (2009)
''Paleogene Fossil Birds''
Springer-Verlag, Heidelberg & New York.
* Merriam-Webster
Merriam-Webster, Inc. is an American company that publishes reference books and is especially known for its dictionaries. It is the oldest dictionary publisher in the United States.
In 1831, George and Charles Merriam founded the company as ...
(MW) 009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
Online English Dictionary
Anhinga
Retrieved 2009-Sep-09.
*
* Mlíkovský, Jirí (2002)
''Cenozoic Birds of the World''
(Part 1: Europe). Ninox Press, Prague.
* Myers, P.; Espinosa, R.; Parr, C.S.; Jones, T.; Hammond, G.S. & Dewey, T.A. 009 009 may refer to:
* OO9, gauge model railways
* O09, FAA identifier for Round Valley Airport
* 0O9, FAA identifier for Ward Field, see List of airports in California
* British secret agent 009, see 00 Agent
* BA 009, see British Airways Flight 9
* ...
Animal Diversity Web
Animal Diversity Web (ADW) is an online database that collects the natural history, classification, species characteristics, conservation biology, and distribution information on thousands of species of animals. The website includes thousands ...
Anhingidae
Retrieved 2009-Sep-09.
* Noriega, Jorge Ignacio (1994): Las Aves del "Mesopotamiense" de la provincia de Entre Ríos, Argentina The birds of the 'Mesopotamian' of Entre Ríos Province, Argentina" Doctoral thesis, Universidad Nacional de La Plata
The La Plata National University ( es, Universidad Nacional de La Plata, UNLP) is one of the most important Argentine national universities and the biggest one situated in the city of La Plata, capital of Buenos Aires Province. It has over ...
n Spanish
N, or n, is the fourteenth Letter (alphabet), letter in the Latin alphabet, used in the English alphabet, modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is English alphabet# ...
br>PDF abstract
*
*
External links
{{Authority control
Anhingidae
Extant Burdigalian first appearances
Taxa named by Ludwig Reichenbach