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Harrier Hawk
''Polyboroides'' is a genus of bird of prey in the family Accipitridae. This genus has two recognized species found in Sub-Saharan Africa and Madagascar. The two species are allopatric and restricted to the Afrotropical realm. They are generally known as harrier-hawks. Etymology ''Polyboroides'': Genus ''Polyborus'' Vieillot, 1816; gr, -οιδης ''-oidēs'' "resembling". Species The genus ''Polyboroides'' has two recognized species: 150px, Adult Etosha National Park">Etosha NP. Note the double-jointed legs enabling it to hang downwards and yet reach upwards with its beak. See also * Harrier (bird) References Bird genera Taxonomy articles created by Polbot {{Accipitriformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Harrier-hawk
The African harrier-hawk, harrier hawk or gymnogene (''Polyboroides typus'') is a bird of prey. It is about in length. It breeds in most of Africa south of the Sahara. The only other member of the genus is the allopatric Madagascar harrier-hawk (''Polyboroides radiatus''). Description left, 165px, Adult hunting at a weaver colony in Etosha National Park, Namibia The African harrier-hawk is a medium-sized raptor. The upperparts, head and breast are pale grey. The belly is white with fine dark barring. The broad wings are pale grey with a black trailing edge fringed with a narrow white line. The tail is black with a single broad white band. There is a bare facial patch of variable colour, usually red or yellow. Genders are similar, but young birds have pale brown instead of grey, and dark brown replacing black. An unusual trait of this species is the double-jointed knees it possesses, which enable it to reach into otherwise inaccessible holes and cracks for prey. A comparable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyboroides Typus
The African harrier-hawk, harrier hawk or gymnogene (''Polyboroides typus'') is a bird of prey. It is about in length. It breeds in most of Africa south of the Sahara. The only other member of the genus is the allopatric Madagascar harrier-hawk (''Polyboroides radiatus''). Description left, 165px, Adult hunting at a weaver colony in Etosha National Park, Namibia The African harrier-hawk is a medium-sized raptor. The upperparts, head and breast are pale grey. The belly is white with fine dark barring. The broad wings are pale grey with a black trailing edge fringed with a narrow white line. The tail is black with a single broad white band. There is a bare facial patch of variable colour, usually red or yellow. Genders are similar, but young birds have pale brown instead of grey, and dark brown replacing black. An unusual trait of this species is the double-jointed knees it possesses, which enable it to reach into otherwise inaccessible holes and cracks for prey. A comparable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Genera
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 ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have 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 loss of flight in some birds, including ratites, penguins, and diverse 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 some waterbirds, have further evolved for swimming. Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyboroides
''Polyboroides'' is a genus of bird of prey in the family Accipitridae. This genus has two recognized species found in Sub-Saharan Africa and Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa .... The two species are allopatric and restricted to the Afrotropical realm. They are generally known as harrier-hawks. Etymology ''Polyboroides'': Genus ''Polyborus'' Vieillot, 1816; gr, -οιδης ''-oidēs'' "resembling". Species The genus ''Polyboroides'' has two recognized species: 150px, Adult weaver colony in Etosha National Park">Etosha NP. Note the double-jointed legs enabling it to hang downwards and yet reach upwards with its beak. See also * Harrier (bird) References Polyboroides, Bird genera Birds of prey of Sub-Saharan Africa, Taxonomy ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrier (bird)
A harrier is any of the several species of diurnal hawks sometimes placed in the subfamily Circinae of the bird of prey family Accipitridae. Harriers characteristically hunt by flying low over open ground, feeding on small mammals, reptiles, or birds. The young of the species are sometimes referred to as ring-tail harriers. They are distinctive with long wings, a long narrow tail, the slow and low flight over grasslands and skull peculiarities. The harriers are thought to have diversified with the expansion of grasslands and the emergence of grasses about 6 to 8 million years ago during the Late Miocene and Pliocene. Taxonomy The genus ''Circus'' was introduced by the French naturalist Bernard Germain de Lacépède in 1799. The type species was subsequently designated as the western marsh harrier. Most harriers are placed in this genus. The word ''Circus'' is derived from the Ancient Greek ''kirkos'', referring to a bird of prey named for its circling flight (''kirkos'', "c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2012-African-Harrier Hawk
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by 2, although by other definitions 1 is the second natural number, following 0. The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar Harrier-hawk
The Madagascar harrier-hawk (''Polyboroides radiatus'') is a very large species of bird of prey in the family Accipitridae, endemic to Madagascar. Description The Madagascar harrier-hawk is a largish raptor with long and broad wings which when folded almost reach to the tip of the tail. It has a black tail with a single broad grey band bisecting the black half way along its length, Adult birds are grey above with blackish flight feathers. The underparts are white with dense dark barring on the breast, belly and underwing coverts while the upper breast and throat are the same colour as the upperparts and form a grey hood, broken by the yellow face. The bill is yellow with a black tip and the legs are yellow. Distribution The Madagascar harrier-hawk is quite widespread and common, albeit in small numbers, in most regions of Madagascar but it is scarce on the deforested central plateau. It can be found from sea level to altitude. Habitat The Madagascar harrier-hawk occurs in a var ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyboroides Radiatus
The Madagascar harrier-hawk (''Polyboroides radiatus'') is a very large species of bird of prey in the family Accipitridae, endemic to Madagascar. Description The Madagascar harrier-hawk is a largish raptor with long and broad wings which when folded almost reach to the tip of the tail. It has a black tail with a single broad grey band bisecting the black half way along its length, Adult birds are grey above with blackish flight feathers. The underparts are white with dense dark barring on the breast, belly and underwing coverts while the upper breast and throat are the same colour as the upperparts and form a grey hood, broken by the yellow face. The bill is yellow with a black tip and the legs are yellow. Distribution The Madagascar harrier-hawk is quite widespread and common, albeit in small numbers, in most regions of Madagascar but it is scarce on the deforested central plateau. It can be found from sea level to altitude. Habitat The Madagascar harrier-hawk occurs in a var ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Harrier Hawk RWD
African or Africans may refer to: * Anything from or pertaining to the continent of Africa: ** People who are native to Africa, descendants of natives of Africa, or individuals who trace their ancestry to indigenous inhabitants of Africa *** Ethnic groups of Africa *** Demographics of Africa *** African diaspora ** African, an adjective referring to something of, from, or related to the African Union ** Citizenship of the African Union ** Demographics of the African Union **Africanfuturism ** African art ** *** African jazz (other) ** African cuisine ** African culture ** African languages ** African music ** African Union ** African lion, a lion population in Africa Books and radio * ''The African'' (essay), a story by French author J. M. G. Le Clézio * ''The African'' (Conton novel), a novel by William Farquhar Conton * ''The African'' (Courlander novel), a novel by Harold Courlander * ''The Africans'' (radio program) Music * "African", a song by Peter Tosh f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrew Smith (zoologist)
Sir Andrew Smith (3 December 1797 – 11 August 1872) was a British surgeon, explorer, ethnologist and zoologist. He is considered the father of zoology in South Africa having described many species across a wide range of groups in his major work, ''Illustrations of the Zoology of South Africa''. Smith was born in Hawick, Roxburghshire. He qualified in medicine at the University of Edinburgh obtaining an M.D. degree in 1819, having joined the Army Medical Services in 1816. South Africa 1820–1837 In 1820 he was ordered to the Cape Colony and was sent to Grahamstown to supervise the medical care of European soldiers and soldiers of the Cape Corps. He was appointed the Albany district surgeon in 1822 and started the first free dispensary for indigent patients in South Africa. He led a scientific expedition into the interior and was able to indulge in his interests of natural history and anthropology. On several occasions, he was sent by governors on confidential missions to vis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afrotropical Realm
The Afrotropical realm is one of Earth's eight biogeographic realms. It includes Africa south of the Sahara Desert, the majority of the Arabian Peninsula, the island of Madagascar, southern Iran and extreme southwestern Pakistan, and the islands of the western Indian Ocean. It was formerly known as the Ethiopian Zone or Ethiopian Region. Major ecological regions Most of the Afrotropic, with the exception of Africa's southern tip, has a tropical climate. A broad belt of deserts, including the Atlantic and Sahara deserts of northern Africa and the Arabian Desert of the Arabian Peninsula, separate the Afrotropic from the Palearctic realm, which includes northern Africa and temperate Eurasia. Sahel and Sudan South of the Sahara, two belts of tropical grassland and savanna run east and west across the continent, from the Atlantic Ocean to the Ethiopian Highlands. Immediately south of the Sahara lies the Sahel belt, a transitional zone of semi-arid short grassland and vachellia sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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