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Leucocarbo
''Leucocarbo'' is a genus of birds in the family Phalacrocoracidae with the members commonly known as blue-eyed shags. This is a group of closely related cormorant taxa. Many have a blue, purple or red ring around the eye (not a blue iris); other shared features are white underparts (at least in some individuals) and pink feet. They are found around the colder parts of the Southern Hemisphere, especially near southern South America, Antarctica, and New Zealand. Many are endemic to remote islands. Determining which types are species and which are subspecies of what larger species is problematic; various recent authorities have recognized from 8 to 14 species and have placed them in a variety of genera. The common names are even more confusing, "like myriad footprints criss-crossing in the snow and about as easy to disentangle." Only one common name is given for most species here. Taxonomy The genus ''Leucocarbo'' was introduced in 1856 by the French naturalist Charles Lucien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 genera. The great cormorant (''Phalacrocorax carbo'') and the common shag (''Gulosus aristotelis'') 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. Cormorants and shags are medium-to-large birds, with body weight in the range of and wing span of . The majority of species have dark feathers. The bill is long, thin and hooked. Their feet have webbing between all four toes. All species are fish-eaters, catching the prey by diving from the surface. They are excellent divers, and under water they propel themselves with their feet with help from their wings; some cormorant species have been f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 genera. The great cormorant (''Phalacrocorax carbo'') and the common shag (''Gulosus aristotelis'') 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. Cormorants and shags are medium-to-large birds, with body weight in the range of and wing span of . The majority of species have dark feathers. The bill is long, thin and hooked. Their feet have webbing between all four toes. All species are fish-eaters, catching the prey by diving from the surface. They are excellent divers, and under water they propel themselves with their feet with help from their wings; some cormorant species have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Shag
The imperial shag or imperial cormorant (''Leucocarbo atriceps'') 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. Taxonomy The taxonomy is very complex and species-limits within this group remain unresolved. Some taxonomic authorities, including the International Ornithologists' Union, split the group into the species listed below. Others consider the all or part of the group conspecific. The following are considered part of this group: * Imperial shag, ''Leucocarbo (atriceps) atriceps'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chatham Shag
The Chatham shag (''Leucocarbo onslowi''), also known as the Chatham Island shag, is a species of bird in the cormorant and shag family, Phalacrocoracidae. It is endemic to the Chatham Islands of New Zealand. For a long time the species was placed in the genus ''Phalacrocorax''; today it is mostly placed with the other blue-eyed shags of New Zealand and Antarctica in the genus ''Leucocarbo''. Its closest relative is the Otago shag of South Island. This is a large, pied shag with a long crest. It is highly coastal, rarely foraging far from shore, although sometimes feeds in the large and brackish Te Whanga Lagoon. It forages for fish and cephalopods and roosts on rocky shores. The species is colonial, breeding in small colonies around the Chatham Islands. Little is known about its breeding behaviour. The species is threatened by introduced predators, disturbance at its breeding colonies and habitat loss. Taxonomy Henry Forbes described the Chatham shag as ''Phalacrocorax onslow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand King Shag
The New Zealand king shag (''Leucocarbo carunculatus''), also known as the rough-faced shag, king shag or kawau, is a rare bird endemic to New Zealand. Some taxonomic authorities, including the International Ornithologists' Union, place this species in the genus ''Leucocarbo''. Others place it in the genus ''Phalacrocorax''. Taxonomy The New Zealand king shag was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's ''Systema Naturae''. He placed it in the genus '' Pelecanus'' and coined the binomial name ''Pelecanus carunculatus''. Gmelin based his description on the "carunculated shag" that had been described in 1785 by the English ornithologist John Latham in his book ''A General Synopsis of Birds ''. Latham had based his description on a specimen in the Leverian Museum. The New Zealand king shag is now one of 16 species placed in the genus ''Leucocarbo'' that was introduced in 1856 by the French na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otago Shag
The Otago shag, (''Leucocarbo chalconotus''), together with the Foveaux shag formerly known as the Stewart Island shag and in its dark phase as the bronze shag, is a species of shag now found only in coastal Otago, New Zealand. Description The species is dimorphic, with two plumages. Roughly one quarter of the individuals are pied, with dark and white feathers, and the rest, known as bronze shags, are dark all over. Both morphs breed together. These large, chunky birds are about 70 cm long, weigh about 2–3 kg, and are slightly larger than Foveaux shags. They can be distinguished from Foveaux shags by their facial ornamentation in the breeding season: Foveaux shags have dark orange papillae on their face, whereas Otago shags have both papillae and small bright orange facial caruncles above the base of the bill. Classification Until 2016, Otago shags and the closely related shags living around Stewart Island and Foveaux Strait were considered to be a single spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guanay Cormorant
The Guanay cormorant or Guanay shag (''Leucocarbo bougainvilliorum'') is a member of the cormorant family found on the Pacific coast of Peru and northern Chile. (The Argentinian population on the Patagonian Atlantic coast appears to be extirpated.) After breeding it spreads south to southern parts of Chile and north to Ecuador, and has also been recorded as far north as Panama and Colombia – probably a result of mass dispersal due to food shortage in El Niño years. Its major habitats include shallow seawater and rocky shores. The Guanay cormorant is similar in coloration to the rock shag, ''Leucocarbo magellanicus'', but larger, measuring 78 cm from the tip of the bill to the end of the tail. Its bill is grayish with some red at the base. The face is red with a green eye-ring. It has roseate feet. The head, neck and back are black as are the outer parts of the thighs. The throat patch, breast and belly are white. In breeding plumage it has a few white feathers on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic Shag
The Antarctic shag (''Leucocarbo bransfieldensis''), sometimes referred to as the imperial cormorant, king cormorant, imperial shag, blue-eyed shag or Antarctic cormorant, is the only species of the cormorant family found in the Antarctic. It is sometimes considered conspecific with the Imperial shag (''Leucocarbo atriceps''). Description The adult Antarctic shag is about 75–77 cm tall, has a wingspan of 124 cm, and weighs 1.5-3.5 kg. When looking at individuals within this species, the most defining characteristic is the warty yellow caruncle found on the forehead. Additionally, the blue "eye", which is actually blue skin surrounding the eye, is a distinct trait that stands out. The head, wings, and outside of the thighs are black. While the underparts and central back are white. White is also found on the wing bars that line the upper wing. The bill is dark ranging from brown to yellow. As the bill hooks, the lower mandible becomes lighter. The species has nak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foveaux Shag
The Foveaux shag (''Leucocarbo stewarti''), together with the Otago shag formerly known as the Stewart Island shag and in its dark phase as the bronze shag, is a species of shag endemic to Stewart Island/Rakiura and Foveaux Strait, from which it takes its name. Taxonomy Until 2016 Foveaux shags were classified with Otago shags (''L. chalconotus'') in a single species, called the Stewart Island shag. Mitochondrial DNA suggests Otago shags are actually more closely related to Chatham shags (''Leucocarbo onslowi''), and osteological, morphological, morphometric, behavioural, and genetic differences supported recognising Foveaux shags as a separate species, ''L. stewarti''. Foveaux and Otago shags probably diverged when populations were split up by lower sea levels in the Pleistocene, and the Chatham Islands were colonised by shags from Otago. Other taxonomists have kept the Otago shag and the Foveaux shag conspecific. A recent taxonomic revision argues that ''Leucocarbo'' is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bounty Shag
The Bounty shag (''Leucocarbo ranfurlyi''), also known as the Bounty Island shag, is a species of cormorant of the family Phalacrocoracidae. They are found only on the tiny and remote Subantarctic Bounty Islands, 670 km southeast of New Zealand. Its natural habitats are open seas and rocky shores. In 2005 618 individuals were counted (with roughly 410 mature ones) and the population seems to have remained stable since. Some taxonomic authorities, including the International Ornithologists' Union, place this species in the genus ''Leucocarbo''. Others place it in the genus '' Phalacrocorax''. Description Size; 71 cm. Large, black-and-white cormorant. Black head, hind neck, lower back, rump, uppertail-coverts, all with metallic blue sheen. White underparts. Pink feet. White patches on wings appear as bar when folded. Caruncles absent. Voice: Male makes call during displays only. IUCN classifies this species as Vulnerable because its very small population and breedi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campbell Shag
The Campbell shag (''Leucocarbo campbelli''), also known as the Campbell Island shag, is a species of bird in the family Phalacrocoracidae. It is endemic to Campbell Island. Its natural habitats are open seas and rocky shores. It is a medium-sized bird, around 63 cm in length, with a wingspan of 105 cm, weighing between 1.6 – 2 kg. They only breed on Campbell Island and forage within 10 km of the island. Its unique, looped head and elongated beak allows to easily feed on shellfish and marine invertebrates. This is done through foraging dive cycles of high speed and efficiency. Some taxonomic authorities, including the International Ornithologists' Union, place this species in the genus Leucocarbo ''Leucocarbo'' is a genus of birds in the family Phalacrocoracidae with the members commonly known as blue-eyed shags. This is a group of closely related cormorant taxa. Many have a blue, purple or red ring around the eye (not a blue iris); othe .... Other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crozet Shag
The Crozet shag (''Leucocarbo melanogenis''), also known as the South Georgia cormorant, is a marine cormorant native to the Crozet, Prince Edward and Marion islands in the South Atlantic Ocean. Characteristics The Crozet shag is a member of the blue-eyed shags group. It has slightly different plumage from other members of its group and occupies a highly specific range, which is why it is recognized as its own species. The breeding plumage of the Crozet shag features black upperparts with green to bluish sheen on the upper wing-coverts. The head, face and neck are black with a slight white coloration below the ears. They possess an average wingspan of and body length of with the males of the species being slightly larger overall. Taxonomy and distribution The bird was first described by Edward Blythe in 1860. The name comes from the Crozet Islands, which falls within the habitat of the bird. The Crozet shag is normally included as a member of the blue-eyed shags. Mitocho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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