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Onychoprion
''Onychoprion'' is a genus of four species of terns in the family Laridae. The genus name is from Ancient Greek , "claw" or "nail", and , "saw". As a group, they have been variously called "brown-winged terns" or "brown-backed terns", though only one species is actually brown; the other three are dark grey or black. Species Although the genus ''Onychoprion'' was first described in 1832 by Johann Georg Wagler, the species in the genus were generally retained within the larger genus '' Sterna'', the genus that holds most terns, until a study in 2005 showed that this treatment was paraphyletic, with these four species less closely related to typical ''Sterna'' terns, than several other terns long treated in other genera like '' Chlidonias'' and '' Larosterna''.Bridge, E. S.; Jones, A. W. & Baker, A. J. (2005)A phylogenetic framework for the terns (Sternini) inferred from mtDNA sequences: implications for taxonomy and plumage evolution. ''Molecular Phylogenetics and Evolution'' 35: 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sooty Tern
The sooty tern (''Onychoprion fuscatus'') is a tern in the family Laridae. It is a seabird of the tropical oceans, and remarkably, has evolved the ability to fly for years at a time, skimming the sea surface for food, and returning to land only to breed, on islands throughout the equatorial zone. Taxonomy The sooty tern was described by Carl Linnaeus in 1766 as ''Sterna fuscata'', bearing this name for many years until the genus ''Sterna'' was split up; it is now classified in the genus ''Onychoprion'' as ''Onychoprion fuscatus''. The genus name is from ancient Greek , "claw" or "nail", and , "saw". The species name ''fuscatus'' is Latin for "dark". The sooty tern has little interspecific variation, but it is usually divided into six to eight allopatric subspecies. Some recent authors further subdivide the Indopacific population into up to eight subspecies altogether, but much of the variation is clinal. The affinities of eastern Pacific birds (including ''O. f. manutarus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoprion Fuscatus
The sooty tern (''Onychoprion fuscatus'') is a tern in the family Laridae. It is a seabird of the tropical oceans, and remarkably, has evolved the ability to fly for years at a time, skimming the sea surface for food, and returning to land only to breed, on islands throughout the equatorial zone. Taxonomy The sooty tern was described by Carl Linnaeus in 1766 as ''Sterna fuscata'', bearing this name for many years until the genus ''Sterna'' was split up; it is now classified in the genus ''Onychoprion'' as ''Onychoprion fuscatus''. The genus name is from ancient Greek , "claw" or "nail", and , "saw". The species name ''fuscatus'' is Latin for "dark". The sooty tern has little interspecific variation, but it is usually divided into six to eight allopatric subspecies. Some recent authors further subdivide the Indopacific population into up to eight subspecies altogether, but much of the variation is clinal. The affinities of eastern Pacific birds (including ''O. f. manutarus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoprion Aleuticus
The Aleutian tern (''Onychoprion aleuticus'') is a migratory bird living in the subarctic region of the globe most of the year. It is frequently associated with the Arctic tern, which it closely resembles. While both species have a black cap, the Aleutian tern may be distinguished by its white forehead (although juvenile Arctic terns also have white foreheads). During breeding season, the Arctic terns have bright red bills, feet, and legs while those of the Aleutian terns are black. ''Onychoprion aleuticus'' has not been thoroughly studied yet. If its winter migratory range was completely unknown until the late 1980s; it is now known that many Aleutian terns spend the winter near the Equator in the western Pacific. The Aleutian tern breeds in wide-ranging coastal colonies only in Alaska and eastern Siberia. Although Alaskan and Siberian populations are not well monitored, both are thought to be in significant decline. Taxonomy The Aleutian tern, ''Onychoprion aleuticus'' (Baird, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleutian Tern
The Aleutian tern (''Onychoprion aleuticus'') is a Bird migration, migratory bird living in the Subarctic, subarctic region of the globe most of the year. It is frequently associated with the Arctic tern, which it closely resembles. While both species have a black cap, the Aleutian tern may be distinguished by its white forehead (although juvenile Arctic terns also have white foreheads). During Seasonal breeder, breeding season, the Arctic terns have bright red bills, feet, and legs while those of the Aleutian terns are black. ''Onychoprion aleuticus'' has not been thoroughly studied yet. If its winter migratory range was completely unknown until the late 1980s; it is now known that many Aleutian terns spend the winter near the Equator in the western Pacific. The Aleutian tern breeds in wide-ranging coastal colonies only in Alaska and eastern Siberia. Although Alaskan and Siberian populations are not well monitored, both are thought to be in significant decline. Taxonomy The Ale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoprion Anaethetus
The bridled tern (''Onychoprion anaethetus'')Sometimes the name is (wrongly?) spelled as ''S. anaestheta'', for instance in: is a seabird of the family Laridae. It is a bird of the tropical oceans. The scientific name is from Ancient Greek. The genus comes from ' meaning "claw" or "nail", and , meaning "saw". The specific ''anaethetus'' means "senseless, stupid". Description This is a medium-sized tern, at 30–32 cm in length and with a 77–81 cm wingspan similar to the common tern in size, but more heavily built. The wings and deeply forked tail are long, and it has dark grey upperparts and white underparts. The forehead and eyebrows are white, as is a striking collar on the hindneck. It has black legs and bill. Juvenile bridled terns are scaly grey above and pale below. This species is unlikely to be confused with any tern apart from the similarly dark-backed sooty tern and the spectacled tern from the Tropical Pacific. It is paler-backed than that sooty, (but not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridled Tern
The bridled tern (''Onychoprion anaethetus'')Sometimes the name is (wrongly?) spelled as ''S. anaestheta'', for instance in: is a seabird of the family Laridae. It is a bird of the tropical oceans. The scientific name is from Ancient Greek. The genus comes from ' meaning "claw" or "nail", and , meaning "saw". The specific ''anaethetus'' means "senseless, stupid". Description This is a medium-sized tern, at 30–32 cm in length and with a 77–81 cm wingspan similar to the common tern in size, but more heavily built. The wings and deeply forked tail are long, and it has dark grey upperparts and white underparts. The forehead and eyebrows are white, as is a striking collar on the hindneck. It has black legs and bill. Juvenile bridled terns are scaly grey above and pale below. This species is unlikely to be confused with any tern apart from the similarly dark-backed sooty tern and the spectacled tern from the Tropical Pacific. It is paler-backed than that sooty, (but n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spectacled Tern
The spectacled tern (''Onychoprion lunatus''), also known as the grey-backed tern, is a seabird in the family Laridae. Description A close relative of the bridled and sooty terns (with which it is sometimes confused), the spectacled tern is less common than the other members of its genus and it has been studied less. The three species, along with the Aleutian tern were recently split into a new genus ''Onychoprion'' from '' Sterna'' (Bridge ''et al.'', 2005). They resemble the sooty tern but with a grey back instead of a black one. Their breast and underparts are white, and they have a black eye line from the bill to the back of the head. Distribution and habitat The spectacled tern breeds on islands of the tropical Pacific Ocean. At the northern end of its distribution it nests in the Northwestern Hawaiian Islands (with the largest population being Lisianski Island) and two small islets off Oahu, in the east as far as the Tuamotu Islands, with other colonies in the Society ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychoprion Lunatus
The spectacled tern (''Onychoprion lunatus''), also known as the grey-backed tern, is a seabird in the family Laridae. Description A close relative of the bridled and sooty terns (with which it is sometimes confused), the spectacled tern is less common than the other members of its genus and it has been studied less. The three species, along with the Aleutian tern were recently split into a new genus ''Onychoprion'' from ''Sterna'' (Bridge ''et al.'', 2005). They resemble the sooty tern but with a grey back instead of a black one. Their breast and underparts are white, and they have a black eye line from the bill to the back of the head. Distribution and habitat The spectacled tern breeds on islands of the tropical Pacific Ocean. At the northern end of its distribution it nests in the Northwestern Hawaiian Islands (with the largest population being Lisianski Island) and two small islets off Oahu, in the east as far as the Tuamotu Islands, with other colonies in the Society Isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tern
Terns are seabirds in the family Laridae, subfamily Sterninae, that have a worldwide distribution and are normally found near the sea, rivers, or wetlands. Terns are treated in eleven genera in a subgroup of the family Laridae, which also includes several genera of gulls and the skimmers (''Rynchops''). They are slender, lightly built birds with long, forked tails, narrow wings, long bills, and relatively short legs. Most species are pale grey above and white below with a contrasting black cap to the head, but the marsh terns, the black-bellied tern, the Inca tern, and some noddies have dark body plumage for at least part of the year. The sexes are identical in appearance, but young birds are readily distinguishable from adults. Terns have a non-breeding plumage, which usually involves a white forehead and much-reduced black cap. Terns are long-lived birds and are relatively free from natural predators and parasites; most species are declining in numbers due directly o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
