Marabou stork (Leptoptilos crumenifer) head

The marabou stork (''Leptoptilos crumenifer'') is a large wading

bird 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 lightweigh ...

in the

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 ...

family Ciconiidae native to sub-Saharan Africa. It breeds in both wet and arid habitats, often near human habitation, especially

landfill A landfill site, also known as a tip, dump, rubbish dump, garbage dump, or dumping ground, is a site for the disposal of waste materials. Landfill is the oldest and most common form of waste disposal, although the systematic burial of the waste ...

sites. It is sometimes called the "

undertaker A funeral director, also known as an undertaker (British English) or mortician (American English), is a professional involved in the business of funeral rites. These tasks often entail the embalming and burial or cremation of the dead, as w ...

bird" due to its shape from behind: cloak-like wings and back, skinny white legs, and sometimes a large white mass of "hair".

Taxonomy

The marabou stork was formally described in 1831 by the French naturalist

René Lesson René-Primevère Lesson (20 March 1794 – 28 April 1849) was a French surgeon, naturalist, ornithologist, and herpetologist. Biography Lesson was born at Rochefort, and entered the Naval Medical School in Rochefort at the age of sixteen. He ...

. He placed it in the stork genus '' Ciconia'' and coined the

binomial name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

''Ciconia crumenifera''. He specified that

locality Locality may refer to: * Locality (association), an association of community regeneration organizations in England * Locality (linguistics) * Locality (settlement) * Suburbs and localities (Australia), in which a locality is a geographic subdivis ...

as Senegal. The species is now placed with the

lesser adjutant The lesser adjutant (''Leptoptilos javanicus'') is a large wading bird in the stork family Ciconiidae. Like other members of its genus, it has a bare neck and head. It is however more closely associated with wetland habitats where it is solitary ...

and the greater adjutant in the genus ''

Leptoptilos ''Leptoptilos'' is a genus of very large tropical storks, also known as the adjutant bird. The name means thin (''lepto'') feather (''ptilos''). Two species are resident breeders in southern Asia, and the marabou stork is found in Sub-Saharan A ...

'' that Lesson had introduced at the same time he described the marabou stork. The species is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

: no

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

are recognised. The common name marabou is thought to be derived from the Arabic word '' murābit'' meaning quiet or hermit-like. The species was originally described as ''Ciconia crumenifera''. When the species was moved into the genus ''Leptoptilos'', the ending was modified to ''crumeniferus'' and this was used by many authors until it was noted that the correct masculine ending to match the genus is ''crumenifer''.

Description

The marabou stork is a massive bird: large specimens are thought to reach a height of and a weight of . A wingspan of was accepted by Fisher and Peterson, who ranked the species as having the largest wing-spread of any living bird. Even higher measurements of up to have been reported, although no measurement over has been verified. It is often credited with the largest spread of any landbird, to rival the

Andean condor The Andean condor (''Vultur gryphus'') is a giant South American Cathartid vulture and is the only member of the genus ''Vultur''. Found in the Andes mountains and adjacent Pacific coasts of western South America, the Andean condor is the larg ...

; more typically, however, these storks measure across the wings, which is about a foot less than the average Andean condor wingspan and nearly two feet less than the average of the largest

albatross Albatrosses, of the biological family Diomedeidae, are large seabirds related to the procellariids, storm petrels, and diving petrels in the order Procellariiformes (the tubenoses). They range widely in the Southern Ocean and the North Pacifi ...

es 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. Typical weight is , unusually as low as , and length (from bill to tail) is . Females are smaller than males. Bill length can range from . Unlike most storks, the three ''

'' species fly with the neck retracted like a

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 ...

. The marabou is unmistakable due to its size, bare head and neck, black back, and white underparts. It has a huge bill, a pink

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 ...

at its throat (''crumenifer(us)'' means "carrier of a pouch for money"), a neck ruff, and black legs and wings. The sexes are alike, but the young bird is browner and has a smaller bill. Full maturity is not reached for up to four years.

Behavior and ecology

Like most storks, the marabou is gregarious and a colonial breeder. In the African dry season (when food is more readily available as the pools shrink), it builds a tree nest in which two or three

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 ...

are laid. It is known to be quite ill-tempered. It also resembles other storks in that it is not very vocal, but indulges in bill-rattling

courtship display A courtship display is a set of display behaviors in which an animal, usually a male, attempts to attract a mate; the mate exercises choice, so sexual selection acts on the display. These behaviors often include ritualized movement ("dances"), ...

s. The throat sac is also used to make various noises at that time.

Breeding

The marabou stork breeds in Africa south of the Sahara. In East Africa, the birds interact with humans and breed in urban areas. In southern African countries, the birds breed mainly in less populated areas. The marabou stork breeds in colonies, starting during the dry season. The female lays two to three eggs in a small nest made of sticks; eggs hatch after an incubation period of 30 days. Their young reach sexual maturity at 4 years of age. Lifespan is 43 years in captivity and 25 years in wild.

Feeding

The marabou stork is a frequent

scavenger Scavengers are animals that consume dead organisms that have died from causes other than predation or have been killed by other predators. While scavenging generally refers to carnivores feeding on carrion, it is also a herbivorous feeding b ...

, and the naked head and long neck are adaptations to this livelihood, as it is with the

vultures A vulture is a bird of prey that scavenges on carrion. There are 23 extant species of vulture (including Condors). Old World vultures include 16 living species native to Europe, Africa, and Asia; New World vultures are restricted to North and So ...

with which the stork often feeds. In both cases, a

feather Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates and a premier ...

ed head would become rapidly clotted with

blood Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells, and transports metabolic waste products away from those same cells. Blood in the c ...

and other substances when the bird's head was inside a large corpse, and the bare head is easier to keep clean. This large and powerful bird eats mainly

carrion Carrion () is the decaying flesh of dead animals, including human flesh. Overview Carrion is an important food source for large carnivores and omnivores in most ecosystems. Examples of carrion-eaters (or scavengers) include crows, vultures, c ...

, scraps, and

faeces Feces ( or faeces), known colloquially and in slang as poo and poop, are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the large intestine. Feces contain a relati ...

but will opportunistically eat almost any animal matter it can swallow. It occasionally eats other birds including ''

Quelea ''Quelea'' is a genus of small passerine birds that belongs to the weaver family Ploceidae, confined to Africa. These are small-sized, sparrow- or finch-like gregarious birds, with bills adapted to eating seeds. Queleas may be nomadic over vas ...

'' nestlings,

pigeon Columbidae () is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres. They primarily ...

dove Columbidae () is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres. They primarily ...

and

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 ...

chicks, and even

flamingo Flamingos or flamingoes are a type of Wader, wading bird in the Family (biology), family Phoenicopteridae, which is the only extant family in the order Phoenicopteriformes. There are four flamingo species distributed throughout the Americas ...

s. During the breeding season, adults scale back on carrion and take mostly small, live prey since nestlings need this kind of food to survive. Common prey at this time may consist of fish, frogs, insects, eggs, small mammals and reptiles such as crocodile hatchlings and eggs,Hancock, Kushlan & Kahl, Storks, ''Storks, Ibises and Spoonbills of the World''. Princeton University Press (1992), and lizards and snakes. Though known to eat putrid and seemingly inedible foods, these storks may sometimes wash food in water to remove soil. When feeding on carrion, marabou frequently follow vultures, which are better equipped with hooked bills for tearing through carrion meat and may wait for the vultures to cast aside a piece, steal a piece of meat directly from the vulture or wait until the vultures are done. As with vultures, marabou storks perform an important natural function by cleaning areas via their ingestion of carrion and waste. Increasingly, marabous have become dependent on human garbage and hundreds of the huge birds can be found around African dumps or waiting for a hand out in urban areas. Marabous eating human garbage have been seen to devour virtually anything that they can swallow, including shoes and pieces of metal. Marabous conditioned to eating from human sources have been known to lash out when refused food.

Threats

Fully grown marabou storks have few natural enemies, and have high annual survival rate, though

lion The lion (''Panthera leo'') is a large Felidae, cat of the genus ''Panthera'' native to Africa and India. It has a muscular, broad-chested body; short, rounded head; round ears; and a hairy tuft at the end of its tail. It is sexually dimorphi ...

s have reportedly preyed on some individuals in ambush. A number of

endoparasites Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has ...

have been identified in wild marabous including ''Cheilospirura'', ''Echinura'' and ''Acuaria''

nematodes The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broa ...

, ''Amoebotaenia sphenoides'' (Cestoda) and ''Dicrocoelium hospes'' (Trematoda).

Human uses

Marabou down is frequently used in the trimming of various items of clothing and hats, as well as

fishing lures A fishing lure is a broad type of artificial angling fishing bait, baits that are replicas designed to mimic real prey animals and attract the attention of predatory fish, using appearances, flashy colors, specular reflection, bright reflections, ...

.''The Oxford Pocket Dictionary of Current English 2008''
(

Oxford University Press Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print books ...

, 2008) Turkey down and similar feathers have been used as a substitute for making 'marabou' trimming. In

tarot The tarot (, first known as '' trionfi'' and later as ''tarocchi'' or ''tarocks'') is a pack of playing cards, used from at least the mid-15th century in various parts of Europe to play card games such as Tarocchini. From their Italian roots, ...

and

tarock Tarot games are card games played with tarot decks, that is, decks with numbered permanent trumps parallel to the suit cards. The games and decks which English-speakers call by the French name Tarot are called Tarocchi in the original Italian, ...

, the Marabou forms part of "the Birds", together with the Sparrow (I of trumps),

Eagle Owl The American (North and South America) horned owls and the Old World eagle-owls make up the genus ''Bubo'', at least as traditionally described. The genus name ''Bubo'' is Latin for the Eurasian eagle-owl. This genus contains 19 species that ar ...

(II of trumps), and the

Cockatoo A cockatoo is any of the 21 parrot species belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. Along with the Psittacoidea (true parrots) and the Strigopoidea (large New Zealand parrots), they make up the ord ...

(III of trumps); sometimes "the Birds" also include the

Dodo The dodo (''Raphus cucullatus'') is an extinct flightless bird that was endemic to the island of Mauritius, which is east of Madagascar in the Indian Ocean. The dodo's closest genetic relative was the also-extinct Rodrigues solitaire. The ...

(V of trumps).

Gallery

File:Marabou stork, Leptoptilos crumeniferus edit1.jpg,

Mikumi National Park Mikumi National Park is a national park near Morogoro, Tanzania with an area of that was established in 1964. It is the fourth largest in the country. The park is crossed by Tanzania's A-7 highway. Territory Mikumi National Park borders Selou ...

, Tanzania File:The Big Game of Africa (1910) - Giant Marabou.png, Large marabou stork,

British East Africa East Africa Protectorate (also known as British East Africa) was an area in the African Great Lakes occupying roughly the same terrain as present-day Kenya from the Indian Ocean inland to the border with Uganda in the west. Controlled by Britai ...

File:Marabou Stork (Leptoptilos crumeniferus) skeleton at the Royal Veterinary College anatomy museum.JPG, Skeleton of a marabou stork File:The Childrens Museum of Indianapolis - Marabou stork skull cast.jpg, Skull cast from a ''Leptoptilos crumenifer'' displays its long beak File:Leptoptilos crumeniferus and vultures -Masai Mara -Kenya-8.jpg, A Marabou stork and

Griffon vulture The Eurasian griffon vulture (''Gyps fulvus'') is a large Old World vulture in the bird of prey family Accipitridae. It may also be known as the Griffon vulture, though it may be used for the genus as a whole. It is not to be confused with Rü ...

s (''G. fulvus'') scavenging in the

Masai Mara Maasai Mara, also sometimes spelled Masai Mara and locally known simply as The Mara, is a large national game reserve in Narok, Kenya, contiguous with the Serengeti National Park in Tanzania. It is named in honor of the Maasai people, the ancest ...

, Kenya File:BLW Evening Cloak.jpg, 1920 cloak trimmed with marabou feathers File:Marabou stork (Leptoptilos crumenifer) spreading wings.jpg, spreading wings,

Uganda }), is a landlocked country in East Africa East Africa, Eastern Africa, or East of Africa, is the eastern subregion of the African continent. In the United Nations Statistics Division scheme of geographic regions, 10-11-(16*) territor ...

File:Marabou stork (Leptoptilos crumenifer) spreading wings 2.jpg, spreading wings, Ethiopia Marabou storks (Leptoptilos crumenifer) on elephant carcass.jpg, feeding on elephant carcass

References

External links

* *
Marabou Stork
– ''The Atlas of Southern African Birds'' {{Taxonbar, from=Q512737 marabou stork Scavengers Birds of Sub-Saharan Africa marabou stork Birds of East Africa marabou stork