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Crow
A crow is a bird of the genus ''Corvus'', or more broadly a synonym for all of ''Corvus''. Crows are generally black in colour. The word "crow" is used as part of the common name of many species. The related term "raven" is not pinned scientifically to any certain trait, but is rather a general grouping for larger ''Corvus spp.'' Species * ''Corvus albus'' – pied crow (Central African coasts to southern Africa) * ''Corvus bennetti'' – little crow (Australia) * ''Corvus brachyrhynchos'' – American crow (United States, southern Canada, northern Mexico) * ''Corvus capensis'' – Cape crow or Cape rook (Eastern and southern Africa) * ''Corvus cornix'' – hooded crow (Northern and Eastern Europe and Northern Africa and Middle East) * ''Corvus corone'' – carrion crow (Europe and eastern Asia) *''Corvus culminatus'' – Indian jungle crow (South Asia) * ''Corvus edithae'' – Somali crow or dwarf raven (eastern Africa) * ''Corvus enca'' – slender-billed crow (Malaysia, Born ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corvus Corone -near Canford Cliffs, Poole, England-8
''Corvus'' is a widely distributed genus of medium-sized to large birds in the family Corvidae. It includes species commonly known as crows, ravens and rooks. The species commonly encountered in Europe are the carrion crow, the hooded crow, the common raven and the rook; those discovered later were named "crow" or "raven" chiefly on the basis of their size, crows generally being smaller. The genus name is Latin for "crow". The 45 or so members of this genus occur on all temperate continents except South America, and several islands. The ''Corvus'' genus makes up a third of the species in the family Corvidae. The members appear to have evolved in Asia from the corvid stock, which had evolved in Australia. The collective name for a group of crows is a "flock" or a "murder". Recent research has found some crow species capable of not only tool use, but also tool construction. Crows are now considered to be among the world's most intelligent animals with an encephalization quotie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corvus
''Corvus'' is a widely distributed genus of medium-sized to large birds in the family Corvidae. It includes species commonly known as crows, ravens and Rook (bird), rooks. The species commonly encountered in Europe are the carrion crow, the hooded crow, the common raven and the rook (bird), rook; those discovered later were named "crow" or "raven" chiefly on the basis of their size, crows generally being smaller. The genus name is Latin for "crow". The List of Corvus species, 45 or so members of this genus occur on all temperate continents except South America, and several islands. The ''Corvus'' genus makes up a third of the species in the family Corvidae. The members appear to have evolved in Asia from the corvid stock, which had evolved in Australia. The collective noun, collective name for a group of crows is a "flock" or a "murder". Recent research has found some crow species capable of not only Tool use by animals, tool use, but also tool construction. Crows are now consi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Crow
The American crow (''Corvus brachyrhynchos'') is a large passerine bird species of the family Corvidae. It is a common bird found throughout much of North America. American crows are the New World counterpart to the carrion crow of Europe and the hooded crow of Eurasia; they all occupy the same ecological niche. Although the American crow and the hooded crow are very similar in size, structure and behavior, their calls and visual appearance are different. From beak to tail, an American crow measures , almost half of which is tail. Mass varies from about , with males tending to be larger than females. Plumage is all black, with iridescent feathers. It looks much like other all-black corvids. They are very intelligent, and adaptable to human environments. The most usual call is '. They can be distinguished from the common raven (''C. corax'') because American crows are smaller and the beak is slightly less pronounced; from the fish crow (''C. ossifragus'') because American crows ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hooded Crow
The hooded crow (''Corvus cornix''), also called the scald-crow or hoodie, is a Eurasian bird species in the genus ''Corvus''. Widely distributed, it is found across Northern, Eastern, and Southeastern Europe, as well as parts of the Middle East. It is an ashy grey bird with black head, throat, wings, tail, and thigh feathers, as well as a black bill, eyes, and feet. Like other corvids, it is an omnivorous and opportunistic forager and feeder. The hooded crow is so similar in morphology and habits to the carrion crow (''Corvus corone'') that for many years they were considered by most authorities to be geographical races of one species. Hybridization observed where their ranges overlapped added weight to this view. However, since 2002, the hooded crow has been elevated to full species status after closer observation; the hybridisation was less than expected and hybrids had decreased vigour. Within the hooded crow species, four subspecies are recognized, with one, the Mesopotamia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaiian Crow
The Hawaiian crow or alalā (''Corvus hawaiiensis'') is a species of bird in the crow family, Corvidae, that is currently extinct in the wild, though reintroduction programs are underway. It is about the size of the carrion crow at in length, but with more rounded wings and a much thicker bill. It has soft, brownish-black plumage and long, bristly throat feathers; the feet, legs and bill are black. Today, the Hawaiian crow is considered the most endangered of the family Corvidae. They are recorded to have lived up to 18 years in the wild, and 28 years in captivity. Some Native Hawaiians consider the Hawaiian crow an ''aumakua'' ( family god). The species is known for strong flying ability and resourcefulness, and the reasons for its extirpation are not fully understood. It is thought that introduced diseases, such as ''Toxoplasma gondii'', avian malaria (''Plasmodium relictum''), and fowlpox, were probably a significant factor in the species' decline., 16 MB file. Pages are lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrion Crow
The carrion crow (''Corvus corone'') is a passerine bird of the family Corvidae and the genus ''Corvus'' which is native to western Europe and the eastern Palearctic. Taxonomy and systematics The carrion crow was one of the many species originally described by Carl Linnaeus in his landmark 1758 10th edition of ''Systema Naturae'', and it still bears its original name of ''Corvus corone''. The binomial name is derived from the Latin , "raven", and Greek , "crow". The hooded crow, formerly regarded as a subspecies, has been split off as a separate species, and there is some discussion whether the eastern carrion crow (''C. c. orientalis'') is distinct enough to warrant specific status; the two taxa are well separated, and it has been proposed they could have evolved independently in the wetter, maritime regions at the opposite ends of the Eurasian landmass.Madge, Steve & Burn, Hilary (1994): ''Crows and jays: a guide to the crows, jays and magpies of the world''. A&C Black, Lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torresian Crow
The Torresian crow (''Corvus orru''), also called the Australian crow or Papuan crow, is a passerine bird in the crow family native to the north and west of Australia and nearby islands in Indonesia and Papua New Guinea. The species has a black plumage, beak and mouth with white irises. The base of the feathers on the head and neck are white. The Torresian crow is slightly larger with a more robust bill than the morphologically similar little crow. Taxonomy The Torresian crow was described by the French ornithologist Charles Lucien Bonaparte in 1850. The origin of the specific epithet ''orru'' is not known but may be derived from a Papuan name. There are three subspecies: * ''C. o. latirostris'' Meyer, AB, 1884 – east Lesser Sunda Islands * ''C. o. orru'' Bonaparte, 1850 – Maluku Islands, New Guinea, D'Entrecasteaux Islands. and Louisiade Archipelago * ''C. o. cecilae'' Mathews, 1912 – west, central and northern Australia The Bismarck crow (''Corvus insulari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Crow
The fish crow (''Corvus ossifragus'') is a species of crow associated with wetland habitats in the eastern and southeastern United States. Taxonomy and etymology The fish crow was given its binomial name by the Scottish ornithologist Alexander Wilson in 1812, in the fifth volume of his ''American Ornithology''. The binomial is from Latin; ''Corvus'' means "raven", while ''ossifragus'' means "bone-breaker". It is derived from ''os'' or ''ossis'', meaning "bone", and ''frangere'', meaning "to break". The English-language common name ''fish crow'' also derives from Wilson, who ascribed the name to the crow's aquatic diet, as described to him by local fishermen. He distinguished the fish crow from John Bartram's ''great seaside crow'' by the former's diminutive size when compared to the American crow. The fish crow's taxonomic relation to other species of the ''Corvus'' genus is still poorly understood, but DNA sequencing indicates that it is most closely related to the palm cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Caledonian Crow
The New Caledonian crow (''Corvus moneduloides'') is a medium-sized member of the family Corvidae, native to New Caledonia. The bird is often referred to as the 'qua-qua' due to its distinctive call. It eats a wide range of food, including many types of invertebrates, eggs, nestlings, small mammals, snails, nuts and seeds. The New Caledonian crow sometimes captures grubs in nooks or crevices by poking a twig at the grub to agitate it into biting the twig, which the crow then withdraws with the grub still attached. This method of feeding indicates the New Caledonian crow is capable of tool use. They are also able to make hooks. This species is also capable of solving a number of sophisticated cognitive tests which suggest that it is particularly intelligent. As a result of these findings, the New Caledonian crow has become a model species for scientists trying to understand the impact of tool use and manufacture on the evolution of intelligence. Description The New Caledonian cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
House Crow
The house crow (''Corvus splendens''), also known as the Indian, greynecked, Ceylon or Colombo crow, is a common bird of the crow family that is of Asian origin but now found in many parts of the world, where they arrived assisted by shipping. It is between the jackdaw and the carrion crow in size ( in length) but is slimmer than either. The forehead, crown, throat and upper breast are a richly glossed black, whilst the neck and breast are a lighter grey-brown in colour. The wings, tail and legs are black. There are regional variations in the thickness of the bill and the depth of colour in areas of the plumage. Taxonomy The nominate race ''C. s. splendens'' is found in Pakistan, India, Nepal and Bangladesh and has a grey neck collar. The subspecies ''C. s. zugmayeri'' is found in the dry parts of South Asia and Iran and has a very pale neck collar. The subspecies ''C. s. protegatus'' is found in southern India, the Maldives (sometimes separated as ''maledivicus'') and Sri Lanka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Large-billed Crow
The large-billed crow (''Corvus macrorhynchos''), formerly referred to widely as the jungle crow, is a widespread Asian species of crow. It is very adaptable and is able to survive on a wide range of food sources, making it capable of colonizing new areas, due to which it is often considered a nuisance, especially on islands. It has a large bill, which is the source of its scientific name ''macrorhynchos'' (Ancient Greek for "large beak") and it is sometimes known by the common name thick-billed crow. It can also be mistaken for a common raven. Johann Georg Wagler first described the species from a holotype obtained from Java in the year 1827. The eastern jungle crow and Indian jungle crow were once considered conspecific and together called the jungle crow. Subspecies It has nine subspecies, and some of them are distinctive vocally, Morphology (biology), morphologically and Genetics, genetically, leading to treatments that raise some of them into species status.Madge, S. C. (200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Jungle Crow
The Indian jungle crow (''Corvus culminatus'') is a species of crow found across the Indian Subcontinent south of the Himalayas. It is very common and readily distinguished from the house crow (''Corvus splendens''), which has a grey neck. In the past the species was treated as a subspecies of another crow species, but vocalizations and evidence from ectoparasite co-evolution and phylogenetic evidence have led to it being considered as a distinct species in modern taxonomic treatments. It differs in its voice from the large-billed crow (''Corvus macrorhynchos'') found in the higher elevations of the Himalayas and the eastern jungle crow (''Corvus levaillantii'') overlaps in the eastern part of its range. In appearance, it can be difficult to distinguish from either of these species although the plumage tends to be more uniformly glossed in purple and has a longer bill with a fine tip and a less arched culmen. The Himalayan species has a slightly wedge-shaped tail, unlike the ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
