Petrels are tube-nosed
seabird
Seabirds (also known as marine birds) are birds that are adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same envir ...
s in the
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 lightweig ...
order
Procellariiformes
Procellariiformes is an order of seabirds that comprises four families: the albatrosses, the petrels and shearwaters, and two families of storm petrels. Formerly called Tubinares and still called tubenoses in English, procellariiforms are oft ...
.
Description
The common name does not indicate relationship beyond that point, as "petrels" occur in three of the four families within that group (all except the
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 Pac ...
family, Diomedeidae). Having a
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 ...
record that was assumed to extend back at least 60 million years, the Procellariiformes was long considered to be among the older bird groupings, other than the
ratite
A ratite () is any of a diverse group of flightless, large, long-necked, and long-legged birds of the infraclass Palaeognathae. Kiwi, the exception, are much smaller and shorter-legged and are the only nocturnal extant ratites.
The systematics ...
s, with presumably distant ties to
penguin
Penguins (order Sphenisciformes , family Spheniscidae ) are a group of aquatic flightless birds. They live almost exclusively in the Southern Hemisphere: only one species, the Galápagos penguin, is found north of the Equator. Highly adap ...
s and
loon
Loons ( North American English) or divers ( British / Irish English) are a group of aquatic birds found in much of North America and northern Eurasia. All living species of loons are members of the genus ''Gavia'', family Gaviidae and order ...
s. However, recent research and fossil finds such as ''
Vegavis'' show that the
Galliformes
Galliformes is an order of heavy-bodied ground-feeding birds that includes turkeys, chickens, quail, and other landfowl. Gallinaceous birds, as they are called, are important in their ecosystems as seed dispersers and predators, and are ofte ...
(
pheasant
Pheasants ( ) are birds of several genera within the family Phasianidae in the order Galliformes. Although they can be found all over the world in introduced (and captive) populations, the pheasant genera native range is restricted to Eurasia ...
s,
grouse
Grouse are a group of birds from the order Galliformes, in the family Phasianidae. Grouse are presently assigned to the tribe Tetraonini (formerly the subfamily Tetraoninae and the family Tetraonidae), a classification supported by mitochondria ...
and relatives), and
Anseriformes
Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which in ...
(
duck
Duck is the common name for numerous species of waterfowl in the family Anatidae. Ducks are generally smaller and shorter-necked than swans and geese, which are members of the same family. Divided among several subfamilies, they are a form ...
s,
geese) are still not fully resolved.
Known species
All the members of the order are exclusively
pelagic
The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth (as illustrated on the right). The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or w ...
in distribution—returning to land only to breed.
The family
Procellariidae is the main radiation of medium-sized true petrels, characterised by united nostrils with medium septum, and a long outer functional primary feather. It is dominant in the
Southern Ocean
The Southern Ocean, also known as the Antarctic Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica. With a size of , it is regarded as the second-smal ...
s, but not so in the Northern Hemisphere.
It includes a number of petrel groups, the relationships between which have finally been resolved to satisfaction.
[
* The fulmarine petrels: seven species of surface predators and ]filter feeder
Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feedin ...
s, breed in high latitudes but migrate along cool currents to the north. All but ''Fulmarus'' are essentially confined to the south, ''Fulmarus'' apparently colonised the Northern Hemisphere during the Early 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 ...
.
** The huge giant petrel
Giant petrels form a genus, ''Macronectes'', from the family Procellariidae, which consists of two species. They are the largest birds of this family. Both species are restricted to the Southern Hemisphere, and though their distributions overla ...
s, genus ''Macronectes'', which are convergent with the albatrosses
** The true fulmar
The fulmars are tubenosed seabirds of the family Procellariidae. The family consists of two extant species and two extinct fossil species from the Miocene.
Fulmars superficially resemble gulls, but are readily distinguished by their flight on ...
s, genus ''Fulmarus''
** Antarctic petrel
The Antarctic petrel (''Thalassoica antarctica'') is a boldly marked dark brown and white petrel, found in Antarctica, most commonly in the Ross and Weddell Seas. They eat Antarctic krill, fish, and small squid. They feed while swimming but c ...
''Thalassoica antarctica''
** Cape petrel ''Daption capense''
** Snow petrel
The snow petrel (''Pagodroma nivea'') is the only member of the genus ''Pagodroma.'' It is one of only three birds that has been seen at the Geographic South Pole, along with the Antarctic petrel and the south polar skua, which have the most s ...
''Pagodroma nivea''
* The prions: A specialised group of a few very numerous species, all southern. They have a small, fulmar-like form and mostly filter-feed on zooplankton.
** '' Pachyptila'', the prions proper
* The procellariine petrels, larger or mid-sized species feeding on fish and molluscs which are fairly close to the prions:
** ''Procellaria
Procellaria is a genus of Southern Ocean long-winged seabirds related to prions, and within the order Procellariiformes. The black petrel (''Procellaria parkinsoni'') ranges in the Pacific Ocean, and as far north as Central America. The specta ...
''
** '' Bulweria''
* Shearwaters: There are numerous species in several genera with a medium number of species.
** '' Calonectris''
** '' Puffinus'', which is two rather distinct groups of larger and smaller species
** ''Pseudobulweria
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''Pseudobulweria'' is a genus of seabirds in the family Procellariidae. They have long been retained with the gadfly petrel genus ''Pterodroma'' despite morphological differences. Mitochondrial DNA cytochrome ''b'' sequence analysis ...
''
** Kerguelen petrel
The Kerguelen petrel (''Aphrodroma brevirostris'') is a small (36 cm long) slate-grey seabird in the family Procellariidae. It is the only species placed in the genus ''Aphrodroma''. It is a pelagic, circumpolar seabird of the Southern Oc ...
''Lugensa brevirostris''
* The gadfly petrel
The gadfly petrels or ''Pterodroma'' are a genus of about 35 species of petrels, part of the seabird order Procellariiformes. The gadfly petrels are named for their speedy weaving flight, as if evading gadflies ( horseflies). The flight action is ...
s: These are a considerable number of agile short-billed petrels in the genus ''Pterodroma'' which include the endangered Bermuda petrel
The Bermuda petrel (''Pterodroma cahow'') is a gadfly petrel. Commonly known in Bermuda as the cahow, a name derived from its eerie cries, this nocturnal ground-nesting seabird is the national bird of Bermuda and can be found pictured on Bermudi ...
or cahow and a considerable number of forms rendered 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 ...
by human activity.
The families Oceanitidae
Austral storm petrels, or southern storm petrels, are seabirds in the family Oceanitidae, part of the order Procellariiformes. These smallest of seabirds feed on planktonic crustaceans and small fish picked from the surface, typically while hove ...
and Hydrobatidae are the storm petrels, small pelagic petrels with a fluttering flight which often follow ships.
The family Pelecanoididae is the four species of diving petrels, genus ''Pelacanoides''. These are auk
An auk or alcid is a bird of the family Alcidae in the order Charadriiformes. The alcid family includes the murres, guillemots, auklets, puffins, and murrelets. The word "auk" is derived from Icelandic ''álka'', from Old Norse ''alka'' (a ...
-like small petrels of the southern oceans.
The word ''petrel'' (first recorded in that spelling 1703) comes from earlier (''ca.'' 1670) ''pitteral''; the English explorer William Dampier
William Dampier (baptised 5 September 1651; died March 1715) was an English explorer, pirate, privateer, navigator, and naturalist who became the first Englishman to explore parts of what is today Australia, and the first person to circumnav ...
wrote the bird was so called from its way of flying with its feet just skimming the surface of the water, recalling Saint Peter
) (Simeon, Simon)
, birth_date =
, birth_place = Bethsaida, Gaulanitis, Syria, Roman Empire
, death_date = Between AD 64–68
, death_place = probably Vatican Hill, Rome, Italia, Roman Empire
, parents = John (or Jonah; Jona)
, occupat ...
's walk on the sea of Galilee (Matthew xiv.28); if so, it likely was formed in English as a diminutive of Peter (< Old french: Peterelle (?) > Late lat, Peterellus < Late lat, Petrus < grc-gre, Πέτρος, Petros < grc-gre, πέτρα, petra = "stone").
See also
*Skua
The skuas are a group of predatory seabirds with seven species forming the genus ''Stercorarius'', the only genus in the family Stercorariidae. The three smaller skuas, the long-tailed skua, the Arctic skua, and the pomarine skua are calle ...
*Agreement on the Conservation of Albatrosses and Petrels
The Agreement on the Conservation of Albatrosses and Petrels (ACAP) is a legally binding international agreement signed in 2001 and entered into force on 1 February 2004 when South Africa ratified as the fifth Party to the Agreement.
It was crea ...
References
External links
*
Petrel and shearwater videos
on the Internet Bird Collection
Agreement on the Conservation of Albatrosses and Petrels (ACAP)
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{{Authority control
Procellariiformes
Seabirds
Bird common names