White-breasted cormorant

Last updated

White-breasted cormorant
White-breasted cormorant (Phalacrocorax lucidus).jpg
Lake Ziway, Ethiopia
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Suliformes
Family: Phalacrocoracidae
Genus: Phalacrocorax
Species:
P. lucidus
Binomial name
Phalacrocorax lucidus
Phalacrocorax lucidus map.svg
Range, excluding isolated northern and western populations [1]
  breeding range
  non-breeding range
Synonyms

Phalacrocorax carbo lucidus

The white-breasted cormorant (Phalacrocorax lucidus) is much like the widespread great cormorant and if not a regional variant of the same species, is at least very closely related. It is distinguished from other forms of the great cormorant by its white breast and by the fact that subpopulations are freshwater birds. [2] Phalacrocorax lucidus is not to be confused with the smaller and very different endemic South Australian black-faced cormorant, which also is sometimes called the white-breasted cormorant.

Contents

Taxonomy and description

The white-breasted cormorant (Phalacrocorax lucidus) is a member of the cormorant family Phalacrocoracidae. Its taxonomic status has been under discussion for some decades [3] and several questions still have not been definitively settled. Phalacrocorax lucidus sometimes is treated as a subspecies of the great cormorant, Phalacrocorax carbo lucidus, but some authorities (e.g. Sibley & Monroe, 1990, Sinclair, Hockey and Tarboton, 2002) retain its original treatment as an allospecies in the P. carbo superspecific group, in which case it is referred to as Phalacrocorax lucidus. A black-necked form originally classified as Phalacrocorax patricki or Phalacrocorax carbo patricki is now regarded as synonymous with Phalacrocorax lucidus.

As its name suggests, the 80–100 centimetres (31–39 in) long white-breasted cormorant has a white neck and breast when adult, and the white area tends to increase as the bird becomes more mature. In other respects it is a large cormorant generally resembling the great cormorant.

The smaller and very different southern Australian black-faced cormorant, Phalacrocorax fuscescens, is also sometimes known as the white-breasted cormorant.

Distribution

Dark gular skin is evident when breeding starts White-Breasted Cormorant (Phalacrocorax lucidus).jpg
Dark gular skin is evident when breeding starts

The white-breasted cormorant is the only form of great cormorant found in Sub-Saharan Africa, the only form that has strictly freshwater populations and the only form with a white breast and throat; it does however interbreed freely with dark-breasted forms in central Africa. [2] It has a wide distribution; on the west coast from the Cape Verde Islands to Guinea-Bissau and from Angola to the Cape of Good Hope and northwards on the east coast to Mozambique. It occurs around the entire Southern African coastline, but it is not clear whether the coastal populations are separate from the inland populations. On the African mainland it occurs more frequently in eastern and southern parts, rather than in the drier western regions, where it usually is found only on perennial rivers and dams. On inland waters it commonly occurs together with the reed cormorant and the African darter, but it is ecologically separated from these species by its fishing habits and the size and nature of its prey. [2] There are also inland populations in Nigeria and around Lake Chad, and in eastern and southern Africa from Sudan southwards. It can be found around the Red Sea, where it is sometimes referred to as the Red Sea white-breasted cormorant.

Related Research Articles

<span class="mw-page-title-main">Pelican</span> Genus of large water birds with a throat pouch

Pelicans 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 swallowing. They have predominantly pale plumage, except for the brown and Peruvian pelicans. The bills, pouches, and bare facial skin of all pelicans become brightly coloured before the breeding season. The eight living pelican species have a patchy global distribution, ranging latitudinally from the tropics to the temperate zone, though they are absent from interior South America and from polar regions and the open ocean.

<span class="mw-page-title-main">Darter</span> Family of birds

The darters, anhingas, or snakebirds are mainly tropical waterbirds in the family Anhingidae, which contains a single genus, Anhinga. There are four living species, three of which are very common and widespread while the fourth is rarer and classified as near-threatened by the IUCN. The term snakebird is usually used without any additions to signify whichever of the completely allopatric 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. "Darter" is used with a geographical term when referring to particular species. It alludes to their manner of procuring food, as they impale fishes with their thin, pointed beak. The American darter is more commonly known as the anhinga. It is sometimes called "water turkey" in the southern United States; though the anhinga is quite unrelated to the wild turkey, they are both large, blackish birds with long tails that are sometimes hunted for food.

<span class="mw-page-title-main">Cormorant</span> Family of aquatic birds

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 genera. The great cormorant and the common shag are the only two species of the family commonly encountered in Britain and Ireland and "cormorant" and "shag" appellations have been later assigned to different species in the family somewhat haphazardly.

<span class="mw-page-title-main">Double-crested cormorant</span> Species of bird

The double-crested cormorant is a member of the cormorant family of water birds. It is found near rivers and lakes, and in coastal areas, and is widely distributed across North America, from the Aleutian Islands in Alaska down to Florida and Mexico. Measuring 70–90 cm (28–35 in) in length, it is entirely black except for a bare patch of orange-yellow facial skin and some extra plumage that it exhibits in the breeding season, when it grows a double crest in which black feathers are mingled with white. Five subspecies are recognized. It mainly eats fish and hunts by swimming and diving. Its feathers, like those of all cormorants, are not waterproof and it must spend time drying them out after spending time in the water. Once threatened by the use of DDT, the numbers of this bird have increased markedly in recent years.

<i>Phalacrocorax</i> Genus of birds

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.

<span class="mw-page-title-main">Pelagic cormorant</span> Species of bird

The pelagic cormorant, also known as Baird's cormorant or violet-green cormorant, is a small member of the cormorant family Phalacrocoracidae. Analogous to other smallish cormorants, it is also called the pelagic shag occasionally. This seabird lives along the coasts of the northern Pacific; during winter it can also be found in the open ocean. Pelagic cormorants have relatively short wings due to their need for economical movement underwater, and consequently have the highest flight costs of any bird.

<span class="mw-page-title-main">Little pied cormorant</span> Species of bird

The little pied cormorant, little shag or kawaupaka is a common Australasian waterbird, found around the coasts, islands, estuaries, and inland waters of Australia, New Guinea, New Zealand, Thailand, Myanmar, Singapore, Brunei, Timor Leste, and Indonesia, and around the islands of the south-western Pacific and the subantarctic. It is a small short-billed cormorant usually black above and white below with a yellow bill and small crest, although a mostly black white-throated form predominates in New Zealand. Three subspecies are recognised. Until recently most authorities referred to this species as Phalacrocorax melanoleucos.

<span class="mw-page-title-main">Great cormorant</span> Species of bird

The great cormorant, known as the black shag in New Zealand and formerly also known as the great black cormorant across the Northern Hemisphere, the black cormorant in Australia, and the large cormorant in India, is a widespread member of the cormorant family of seabirds. The genus name is Latinised Ancient Greek, from φαλακρός and κόραξ, and carbo is Latin for "charcoal".

<span class="mw-page-title-main">European shag</span> Species of bird

The European shag or common shag is a species of cormorant. It is the only member of the monotypic genus Gulosus. It breeds around the rocky coasts of western and southern Europe, southwest Asia and north Africa, mainly wintering in its breeding range except for the northernmost birds. In Britain this seabird is usually referred to as simply the shag. The scientific genus name derives from the Latin for glutton. The species name aristotelis commemorates the Greek philosopher Aristotle.

<span class="mw-page-title-main">Reed cormorant</span> Species of bird


The reed cormorant, also known as the long-tailed cormorant, is a bird in the cormorant family Phalacrocoracidae. It breeds in much of Africa south of the Sahara, and Madagascar. It is resident but undertakes some seasonal movements.

<span class="mw-page-title-main">Little cormorant</span> Species of bird

The little cormorant is a member of the cormorant family of seabirds. Slightly smaller than the Indian cormorant it lacks a peaked head and has a shorter beak. It is widely distributed across the Indian Subcontinent and extends east to Java, where it is sometimes called the Javanese cormorant. It forages singly or sometimes in loose groups in lowland freshwater bodies, including small ponds, large lakes, streams and sometimes coastal estuaries. Like other cormorants, it is often found perched on a waterside rock with its wings spread out after coming out of the water. The entire body is black in the breeding season but the plumage is brownish, and the throat has a small whitish patch in the non-breeding season. These birds breed gregariously in trees, often joining other waterbirds at heronries.

<span class="mw-page-title-main">Neotropic cormorant</span> Species of bird

The neotropic cormorant or olivaceous cormorant is a medium-sized cormorant found throughout the American tropics and subtropics, from the middle Rio Grande and the Gulf and Californian coasts of the United States south through Mexico and Central America to southern South America, where it is called by the indigenous name of biguá. It also breeds on the Bahamas, Cuba and Trinidad. It can be found both at coasts and on inland waters. There are at least two subspecies: N. b. mexicanum from Nicaragua northwards and N. b. brasilianum further south. In Peru the neotropic cormorant is used by the Uru people for fishing.

<span class="mw-page-title-main">Red-faced cormorant</span> Species of bird

The red-faced cormorant, red-faced shag or violet shag, is a bird species of the family Phalacrocoracidae.

<span class="mw-page-title-main">Cape cormorant</span> Species of bird

The Cape cormorant or Cape shag is a bird endemic to the southwestern coasts of Africa.

<span class="mw-page-title-main">Socotra cormorant</span> Species of bird

The Socotra cormorant is a threatened species of cormorant that is endemic to the Persian Gulf and the south-east coast of the Arabian Peninsula. It is also sometimes known as the Socotran cormorant or, more rarely, as the Socotra shag. Individuals occasionally migrate as far west as the Red Sea coast. Despite its name, it was only confirmed in 2005 that it breeds on the Socotra islands in the Indian Ocean.

<span class="mw-page-title-main">Black-faced cormorant</span> Species of bird

The black-faced cormorant, also known as the black-faced shag, is a medium-sized member of the cormorant family. Upperparts, including facial skin and bill, are black, with white underparts. It is endemic to coastal regions of southern Australia.

<span class="mw-page-title-main">Crowned cormorant</span> Species of bird

The crowned cormorant is a small cormorant that is endemic to the waters of the cold Benguela Current of southern Africa. It is an exclusively coastal species and is not found more than 10 km (6 mi) away from land. This species is related to the reed cormorant, and was formerly considered to the same species.

<span class="mw-page-title-main">Imperial shag</span> Species of bird

The imperial shag or imperial cormorant is a black and white cormorant native to southern South America, primarily in rocky coastal regions, but locally also at large inland lakes. Some taxonomic authorities, including the International Ornithologists' Union, place it in the genus Leucocarbo, others in the genus Phalacrocorax. It is also known as the blue-eyed shag, blue-eyed cormorant and by many other names, and is one of a larger group of cormorants called blue-eyed shags. The taxonomy is very complex, and several former subspecies are often considered separate species.

<span class="mw-page-title-main">Red-legged cormorant</span> Species of bird

The red-legged cormorant, also known as the red-legged shag, red-footed cormorant, red-footed shag, Gaimard's cormorant and grey cormorant, is a species of cormorant resident to the coastline of South America. It is the only member of the genus Poikilocarbo. It is non-colonial unlike most seabirds. The red-legged cormorant has not been observed wing-spreading, which is unusual among cormorant species.

<span class="mw-page-title-main">Suliformes</span> Order of birds

The order Suliformes is an order recognised by the International Ornithologist's Union. In regard to the recent evidence that the traditional Pelecaniformes is polyphyletic, it has been suggested that the group be divided to reflect the true evolutionary relationships, a 2017 study indicated that they are most closely related to Otidiformes (bustards) and Ciconiiformes (storks).

References

  1. Nelson, J. Bryan (2006). Pelicans, cormorants and their relatives: Pelecanidae, Sulidae, Phalacrocoracidae, Anhingidae, Fregatidae, Phaethontidae (Bird families of the world, Vol. 17 ed.). New York: Oxford University Press. ISBN   9780198577270.
  2. 1 2 3 J.A. Harrison, D.G. Allan, L.G. Underhill, M. Herremans, A.J. Tree, V. Parker, C.J. Brown (eds). The Atlas of Southern African Birds. Published by BirdLife South Africa, P.O. Box 84394, Greenside 2034, Johannesburg, South Africa 1997 ISBN   0 620 20729 9
  3. Brooke RK, Cooper J, Shelton PA, Crawford RJM. Taxonomy, distribution, population size, breeding & conservation of the Whitebreasted Cormorant, Phalacrocorax carbo, on the Southern African coast. Gerfaut 72, pp 188–220 1982.