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Tyto Deroepstorffi
The Andaman masked owl (''Tyto deroepstorffi'') is a barn owl endemic to the southern Andaman Islands archipelago of India, in the Bay of Bengal, Indian Ocean.Bruce, M.D., Christie, D.A., Kirwan, G.M. & Marks, J.S. (2017). Common Barn-owl (''Tyto alba''). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/54929 on 6 September 2017). Regarded by some authors as a subspecies of the common barn owl ('' Tyto alba''), it is recognized by others as a species in its own right. Taxonomy The species was named by Allan Octavian Hume after the collector Frederik Adolph de Roepstorff who shot it at Aberdeen, Andamans. Hume placed it in the genus ''Strix''. Some authors consider this bird to be a subspecies of the barn owl/western barn owl ''(Tyto alba)'', or the eastern barn owl (''Tyto javanica''), but König, in his ''Owls of the World'', recognized it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allan Octavian Hume
Allan Octavian Hume, Order of the Bath, CB Indian Civil Service, ICS (4 June 1829 – 31 July 1912) was a British political reformer, ornithologist, civil servant and botanist who worked in British Raj, British India and was the founding spirit and key founder of the Indian National Congress. He was a proponent of Indian self-rule and strongly supported the idea of Indian independence. He supported the idea of self-governance by Indians. A notable ornithologist, Hume has been called "the Father of Indian Ornithology" and, by those who found him dogmatic, "the Pope of Indian Ornithology". As the collector of Etawah, he saw the Indian Rebellion of 1857 as a result of misgovernance and made great efforts to improve the lives of the common people. The district of Etawah was among the first to be returned to normality and over the next few years Hume's reforms led to the district being considered a model of development. Hume rose in the ranks of the Indian Civil Service (British India ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederik Adolph De Roepstorff
Frederik Adolph de Roepstorff (25 March 1842 – 24 October 1883) was a Danish philologist who worked in the Ross Island Penal Colony, Andaman penal colony in India, where he was shot dead by a convict. He studied the languages of Andaman and Nicobar tribes and collected numerous natural history specimens. The Andaman masked owl (''Tyto deroepstorffi'') was named after him by Allan Octavian Hume, Hume. Biography De Roepstorff was born aboard an English ship sailing from Madras to Europe near the Cape of Good Hope and baptized in Cape Town, which gave him English citizenship. He was the son of Captain Adolph de Roepstorff and Charlotte Georgiana Holmes née Farley. He studied at Horsens Statsskole, Copenhagen, graduating in 1863. He went to India in 1867 and became an extra assistant superintendent in the Andaman Islands penal colony and later became in-charge of the Nicobar Islands. His work was to supervise the prisoners. He went back to Denmark in 1871, married Hedevig Christia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Andaman Islands
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the common ostrich. There are over 11,000 living species and they are split into 44 orders. More than half are passerine or "perching" birds. Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the Flightless bird, loss of flight in some birds, including ratites, penguins, and diverse endemism, endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyto
''Tyto'' is a genus of owls in the family Tytonidae. Depending on the species and the locality, common names include barn owl, common barn owl, grass owl, sooty owl, masked owl, field owl or simply owl. It is the most widely distributed genus of owls in the world and one of the most widespread of all genuses of birds, living almost everywhere except for polar and desert regions, Asia north of the Himalayas, some Indonesian islands and some Pacific Islands. The genus comprises three widespread continental species and many island species including the extinct island species. The widespread species comprise: western barn owl of Europe, western Asia and Africa, the eastern barn owl of Southeast Asia and Australasia, and the American barn owl of the Americas. However, some taxonomic authorities classify barn owls differently, and unify all continental barn owls in to one species. Further research is needed clarify the taxonomies. There is considerable variation of size and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Migration
Bird migration is a seasonal movement of birds between breeding and wintering grounds that occurs twice a year. It is typically from north to south or from south to north. Animal migration, Migration is inherently risky, due to predation and mortality. The Arctic tern holds the long-distance migration record for birds, travelling between Arctic breeding grounds and the Antarctic each year. Some species of Procellariiformes, tubenoses, such as albatrosses, circle the Earth, flying over the southern oceans, while others such as Manx shearwaters migrate between their northern breeding grounds and the southern ocean. Shorter migrations are common, while longer ones are not. The shorter migrations include altitudinal migrations on mountains, including the Andes and Himalayas. The timing of migration seems to be controlled primarily by changes in day length. Migrating birds navigate using celestial cues from the Sun and stars, the Earth's magnetic field, and mental maps. Histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Barn Owl
The eastern barn owl (''Tyto javanica'') is usually considered a subspecies group and together with the American barn owl group, the western barn owl group, and sometimes the Andaman masked owl make up the genus ''Tyto''. The cosmopolitan barn owl is recognized by most taxonomic authorities. A few (including the International Ornithologists' Union) separate them into distinct species, as is done here. The eastern barn owl is native to southeastern Asia and Australasia. The eastern barn owl is nocturnal over most of its range, but in some Pacific islands, it also hunts by day. They specialise in hunting animals on the ground, and nearly all of their food consists of small mammals which they locate by sound, their hearing being very acute. They mate for life unless one of the pair is killed, after which a new pair bond may be formed. Breeding takes place at varying times of year according to locality, with a clutch, averaging about four eggs, being laid in a nest in a tree hollow, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Barn Owl
The western barn owl (''Tyto alba'') is a species of Tyto, barn owl ''Tyto'' native to Europe, southwestern Asia, and Africa. It was formerly considered a subspecies group together with barn owls native to other parts of the world, but this classification was found to be paraphyletic with respect to some other members of the genus. The plumage on the head and back is a mottled shade of grey or brown; that on the underparts varies from white to brown and is sometimes speckled with dark markings. The facial disc is characteristically large and heart-shaped, with white plumage in most subspecies. This owl does not hoot, but utters an eerie, drawn-out screech. The western barn owl is nocturnal over most of its range, but in Great Britain, it also hunts by day. Barn owls specialise in hunting animals on the ground, and nearly all of their food consists of small mammals, which they locate by sound, their hearing being very acute. The owls usually mate for life unless one of the pair i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barn-owl
The barn owls, owls in the genus ''Tyto'', are the most Cosmopolitan distribution, widely distributed genus of owls in the world. They are medium-sized owls with large heads and characteristic heart-shaped faces. They have long, strong legs with powerful talons. The term may be used to describe: *The whole family Tytonidae, though this also includes the bay owls in the genus ''Phodilus'' **''Tyto'', the largest genus of birds in Tytonidae, and particularly these species in that genus: ***Three species that are sometimes considered to be a single species known as barn owl or common barn owl: ****Western barn owl ''Tyto alba'', from Europe, Africa, and the Middle East ****American barn owl ''Tyto furcata'', from the Americas ****Eastern barn owl ''Tyto javanica'', from southeast Asia and Australasia ***Andaman masked owl ''Tyto deroepstorffi'' endemic to the southern Andaman Islands ***New Caledonian barn owl ''Tyto letocarti'', extinct, from the island of New Caledonia in Melanesia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated as subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific name, infraspecific ranks, such as variety (botany), variety, may be named. In bacteriology and virology, under standard International Code of Nomenclature of Prokaryotes, bacterial nomenclature and virus clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. The Indian Ocean has large marginal or regional seas, including the Andaman Sea, the Arabian Sea, the Bay of Bengal, and the Laccadive Sea. Geologically, the Indian Ocean is the youngest of the oceans, and it has distinct features such as narrow continental shelf, continental shelves. Its average depth is 3,741 m. It is the warmest ocean, with a significant impact on global climate due to its interaction with the atmosphere. Its waters are affected by the Indian Ocean Walker circulation, resulting in unique oceanic currents and upwelling patterns. The Indian Ocean is ecologically diverse, with important ecosystems such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
