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Blue-eyed Shag
''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] |
Charles Lucien Bonaparte
Charles Lucien Jules Laurent Bonaparte, 2nd Prince of Canino and Musignano (24 May 1803 – 29 July 1857), was a French naturalist and ornithologist. Lucien and his wife had twelve children, including Cardinal Lucien Bonaparte. Life and career Bonaparte was the son of Lucien Bonaparte and Alexandrine de Bleschamp. Lucien was a younger brother of Napoleon I, making Charles the emperor’s nephew. Born in Paris, he was raised in Italy. On 29 June 1822, he married his cousin, Zénaïde, in Brussels. Soon after the marriage, the couple left for Philadelphia in the United States to live with Zénaïde's father, Joseph Bonaparte (who was also the paternal uncle of Charles). Before leaving Italy, Charles had already discovered a warbler new to science, the moustached warbler, and on the voyage he collected specimens of a new storm-petrel. On arrival in the United States, he presented a paper on this new bird, which was later named after Alexander Wilson. Bonaparte then set about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nannopterum
''Nannopterum'' is a genus of cormorant comprising three species. They are found throughout the Americas, hence the common name American cormorants. These species were formerly classified in the genus '' Phalacrocorax''. A molecular phylogenetic study of the cormorants published in 2014 found that these three species formed a clade that was sister to the genus ''Leucocarbo''. To create monophyletic genera, the three species were moved the resurrected genus ''Nannopterum'' that had been introduced in 1899 by English ornithologist Richard Bowdler Sharpe to accommodate the flightless cormorant. The genus ''Nannopterum'' is thought to have split from ''Leucocarbo'' between 6.7 - 8.0 million years ago. The genus name ''Nannopterum'' combines the Ancient Greek ''nannos'' meaning "dwarf" with ''pteron'' meaning "wing". This name was coined for the flightless cormorant, which does indeed have small wings. Genetic studies have found that the neotropic The Neotropical realm is one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerguelen Shag
The Kerguelen shag (''Leucocarbo verrucosus'') is a species of cormorant endemic to the Kerguelen Islands in the southern Indian Ocean, one of the most isolated places on Earth. Many authorities consider it a subspecies of the imperial shag. Range and habitat This species nests on the coast of Grande Terre (the main island of the archipelago), on offshore islands, and on islands in the Golfe du Morbihan. It forages at sea throughout the archipelago, usually within of shore and especially in bays and inlets, though immatures have been seen rarely as far as . Reports from Heard Island and western Australia may be of ship-assisted birds. In the austral summer it feeds among kelp, sometimes at the bottom. Description The Kerguelen shag is long with a wingspan of , making it the smallest blue-eyed shag. The adult's upperparts, tail, and thighs are metallic greenish black; the underbody to the throat is white; and the wing linings are brown. Some individuals have white patches o ... [...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] |
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] |
South Georgia Shag
The South Georgia shag (''Leucocarbo georgianus''), also known as the South Georgia cormorant, is a marine cormorant native to South Georgia and a few other subantarctic islands in the South Atlantic Ocean. Taxonomy The South Georgia shag is one of the blue-eyed shags (genus ''Leucocarbo''), although some authors have placed it in the genus ''Phalacrocorax''. It has formerly been considered a subspecies of the imperial shag (''L. atriceps''), but it is now usually treated as a full species. It is usually considered to be restricted to South Georgia and Shag Rocks, with populations in the South Sandwich Islands and South Orkney Islands The South Orkney Islands are a group of islands in the Southern Ocean, about north-east of the tip of the Antarctic Peninsula [...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] |
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] |
Auckland Shag
The Auckland shag (''Leucocarbo colensoi'') or Auckland Islands shag is a species of cormorant from New Zealand. The species is endemic to the Auckland Islands archipelago. It is a sedentary bird that primarily eats various crustaceans and fish. In recent years, roughly 1,000 pairs have been recorded. The Auckland shag is a colonial nester, building sizeable nests of, among other items, grass, twigs and seaweed. The Auckland shag lays three pale blue-green eggs in November–February. The incubation period is 26–32 days. The Auckland shag is considered Vulnerable by the IUCN due to its small population size and restricted global range. Some taxonomic authorities, including the International Ornithologists' Union, place this species in the genus Leucocarbo. Others place it in the genus Phalacrocorax. The binomial name of this bird commemorates the naturalist William Colenso. References * Auckland Islands Shag (''Phalacrocorax colensoi'')– BirdLife International { ... [...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] |
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] |
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] |
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