Cape petrel | |
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D. capense australe south east of Tasmania | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Procellariiformes |
Family: | Procellariidae |
Genus: | Daption Stephens, 1826 |
Species: | D. capense |
Binomial name | |
Daption capense | |
Subspecies | |
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Synonyms | |
Procellaria capensisLinnaeus, 1758 |
The Cape petrel (Daption capense), also called the Cape pigeon, pintado petrel, or Cape fulmar, [2] is a common seabird of the Southern Ocean from the family Procellariidae. It is the only member of the genus Daption, and is allied to the fulmarine petrels, and the giant petrels. They are extremely common seabirds with an estimated population of around 2 million.[ citation needed ]
The Cape petrel was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the binomial name Procellaria capensis. [3] Linnaeus cited the "white and black spotted peteril" that had been described and illustrated in 1747 by the English naturalist George Edwards in the second volume of his A Natural History of Uncommon Birds. [4] [5] The Cape petrel is now the only species placed in the genus Daption that was introduced in 1826 by English naturalist James Francis Stephens. [6] [7] The genus name Daption is an anagram of the Portuguese name "Pintado" which was given to the species by navigators because of its piebald plumage. Pintado is from Latin pinctus meaning "painted". The specific epithet capense signifies the Cape of Good Hope, the locality where the type specimen was collected. [8] The word petrel is derived from Saint Peter and the story of his walking on water. This is in reference to the petrel's habit of appearing to run on the water to take off. [9]
All Procellariiformes share certain identifying features. First, they have nasal passages that attach to the upper bill called naricorns. The bills of Procellariiformes are also unique in that they are split into between seven and nine horny plates. They produce a stomach oil made up of wax esters and triglycerides that is stored in the proventriculus. This can be sprayed out of their mouths as a defence against predators and as an energy rich food source for chicks and for the adults during their long flights. [10] Finally, they also have a salt gland that is situated above the nasal passage and helps desalinate their bodies, due to the high amount of ocean water that they imbibe. It excretes a high saline solution from their nose. [11]
Two subspecies are recognised: [7]
The Cape petrel has a black head and neck, and a white belly, breast, and its underwing is white with a black border. Its back, and upperwings are black and white speckled, as is its tail which also has a band of black. When fully grown, their wings span 80–90 cm (31–35 in) and they are 35–40 cm (14–16 in) long. [12]
During breeding season, Cape petrels feed around Antarctica's shelf and during the winter they range further north, as far as Angola and the Galapagos Islands. They breed on many islands of Antarctica and the subantarctic islands, some going as far as the Auckland Islands, the Chatham Islands, Campbell Island. Their main breeding grounds are on the Antarctic Peninsula, South Georgia, the Balleny Islands, the Kerguelen Islands, as well as islands in the Scotia Sea. [13]
The Cape petrels' diet is 80% crustaceans, as well as fish and squid. Krill is their favourite crustacean, which they obtain by surface seizing as well as diving under water and filtering them out. [13] [14] They are also well known for following ships and eating edible waste and carcasses thrown overboard. They are aggressive while feeding and will spit their stomach oil at competitors, even their own species. [13]
They are colonial birds, and nest on cliffs or level ground within a kilometre of the ocean. [13] They tend to have smaller colonies than other petrels. [14] Their nests are formed with pebbles and shells and are placed under overhanging rock for protection, [13] [14] or in a crevice. [14] In November they lay a single clear white egg, which is incubated for 45 days by both sexes. The egg usually measures 53 by 38 millimetres (2.1 in × 1.5 in). [15] Like most other fulmars, they will defend their nest by spitting stomach oil. Skuas in particular will prey on Cape petrel eggs and chicks. Upon hatching, the chick is brooded for ten days until it can thermoregulate, after which both parents assist in the feeding. The chicks fledge after 45 more days, around March. [13]
The Cape petrel has an occurrence range of 146,000,000 km2 (56,370,915 sq mi) and a 2009 estimate places their population of adult birds at 2 million. Consequently, the IUCN rates them as least concern. [1]
Pachyptila is a genus of seabirds in the family Procellariidae and the order Procellariiformes. The members of this genus and the blue petrel form a sub-group called prions. They range throughout the southern hemisphere, often in the much cooler higher latitudes. Three species, the broad-billed prion, the Antarctic prion and the fairy prion, range into the subtropics.
The family Procellariidae is a group of seabirds that comprises the fulmarine petrels, the gadfly petrels, the diving petrels, the prions, and the shearwaters. This family is part of the bird order Procellariiformes, which also includes the albatrosses and the storm petrels.
The northern fulmar, fulmar, or Arctic fulmar is a highly abundant seabird found primarily in subarctic regions of the North Atlantic and North Pacific oceans. There has been one confirmed sighting in the Southern Hemisphere, with a single bird seen south of New Zealand. Fulmars come in one of two color morphs: a light one, with white head and body and gray wings and tail, and a dark one, which is uniformly gray. Though similar in appearance to gulls, fulmars are in fact members of the family Procellariidae, which include petrels and shearwaters.
The black-footed albatross is a large seabird of the albatross family Diomedeidae from the North Pacific. All but 2.5% of the population is found among the Northwestern Hawaiian Islands. It is one of three species of albatross that range in the northern hemisphere, nesting on isolated tropical islands. Unlike many albatrosses, it is dark plumaged.
The Antarctic petrel 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 can dive from both the surface and the air.
The southern giant petrel, also known as the Antarctic giant petrel, giant fulmar, stinker, and stinkpot, is a large seabird of the southern oceans. Its distribution overlaps broadly with the similar northern giant petrel, though it overall is centered slightly further south. Adults of the two species can be distinguished by the colour of their bill-tip: greenish in the southern and reddish in the northern.
The spectacled petrel is a rare seabird that nests only on the high western plateau of Inaccessible Island in the South Atlantic Tristan da Cunha group. It is one of the largest petrels that nests in burrows. This species was formerly considered to be a subspecies of the white-chinned petrel.
Procellaria is a genus of Southern Ocean long-winged seabirds related to prions, and within the order Procellariiformes. The black petrel ranges in the Pacific Ocean, and as far north as Central America. The spectacled petrel is confined to the Atlantic Ocean, and the Westland petrel to the Pacific Ocean. The white-chinned and grey petrel range throughout the higher latitudes of the Southern Ocean.
The northern royal albatross or toroa, is a large seabird in the albatross family. It was split from the closely related southern royal albatross as recently as 1998, though not all scientists support that conclusion and some consider both of them to be subspecies of the royal albatross.
The blue petrel is a small seabird in the shearwater and petrel family, Procellariidae. This small petrel is the only member of the genus Halobaena, but is closely allied to the prions. It is distributed across the Southern Ocean but breeds at a few island sites, all close to the Antarctic Convergence zone.
The fulmarine petrels or fulmar-petrels are a distinct group of petrels within the family Procellariidae. They are the most variable of the four groups within the Procellariidae, differing greatly in size and biology. They do, however, have a unifying feature, their skull, and in particular their nasal tubes. They are predominantly found in the Southern Ocean with one species, the northern fulmar, ranging in the North Pacific and Atlantic Oceans.
The snow petrel is the only member of the genus Pagodroma. It is one of only three birds that have been seen at the Geographic South Pole, along with the Antarctic petrel and the south polar skua, which has the most southerly breeding sites of any bird, inland in Antarctica.
The fairy prion is a small seabird with the standard prion plumage of blue-grey upperparts with a prominent dark "M" marking and white underneath. The sexes are alike. It is a small prion which frequents the low subantarctic and subtropic seas.
The white-chinned petrel also known as the Cape hen and shoemaker, is a large shearwater in the family Procellariidae. It ranges around the Southern Ocean as far north as southern Australia, Peru and Namibia, and breeds colonially on scattered islands. The white-chinned petrel was formerly considered to be conspecific with the spectacled petrel.
The broad-billed prion is a small pelagic seabird in the shearwater and petrel family, Procellariidae. It is the largest prion, with grey upperparts plumage, and white underparts. The sexes are alike. It ranges from the southeast Atlantic to New Zealand mainly near the Antarctic Convergence. In the south Atlantic it breeds on Tristan da Cunha and Gough Island; in the south Pacific it breeds on islands off the south coast of South Island, New Zealand and on the Chatham Islands. It has many other names that have been used such as blue-billed dove-petrel, broad-billed dove-petrel, long-billed prion, common prion, icebird, and whalebird.
The Antarctic prion also known as the dove prion, or totorore in Māori, is the largest of the prions, a genus of small petrels of the Southern Ocean.
The fulmar prion is a species of seabird in the family Procellariidae, found in the southern oceans.
Salvin's prion, also known as the medium-billed prion, is a species of seabird in the petrel family Procellariidae.
The grey petrel, also called the brown petrel, pediunker or grey shearwater is a species of seabird in the Procellariidae, or petrel family. It is pelagic and occurs in the open seas of the Southern Hemisphere, mainly between 32°S and 58°S.
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