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Gabar Goshawk
The gabar goshawk (''Micronisus gabar'') is a small species of African and Arabian bird of prey in the family Accipitridae. Description The gabar goshawk is polymorphic and occurs in two distinct forms which fluctuate in relative abundance across the geographic range of the species. The more frequent, paler form has mostly grey upperparts with a conspicuous, white rump and white and grey barring on the chest, thighs and underwings, and a dark grey, barred tail. In contrast, the less frequent form, which accounts on average for approximately 25 percent of the overall population, is almost completely black. In both forms of adult the eyes are dark, and the legs are long and the cere is red. The cere and the legs are yellow in immatures and the plumage is generally browner, with the pale birds having untidier barring on the chest than the adult. The females are significantly larger than the males, the male's weigh 90 – 173g and the females 167 – 240g The body length is 28–36 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Robert Gray
George Robert Gray (8 July 1808 – 6 May 1872) was an English zoology, zoologist and author, and head of the Ornithology, ornithological section of the British Museum, now the Natural History Museum, London, Natural History Museum, London for forty-one years. He was the younger brother of the zoologist John Edward Gray and the son of the botanist Samuel Frederick Gray. George Gray's most important publication was his ''Genera of Birds'' (1844–49), illustrated by David William Mitchell and Joseph Wolf, which included 46,000 references. Biography He was bornon 8 July 1808 in Little Chelsea, London, to Samuel Frederick Gray, naturalist and pharmacologist, and Elizabeth (née Forfeit), his wife. He was educated at Merchant Taylor's School. Gray started at the British Museum as Assistant Keeper of the Zoology Branch in 1831. He began by cataloguing insects, and published an ''Entomology of Australia'' (1833) and contributed the entomogical section to an English edition of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miombo
Miombo woodland is a tropical and subtropical grasslands, savannas, and shrublands biome (in the World Wide Fund for Nature scheme) located in central and southern tropical Africa. It includes three woodland savanna ecoregions (listed below) characterized by the dominant presence of '' Brachystegia'' and '' Julbernardia'' genera of trees, and has a range of climates ranging from humid to semi-arid, and tropical to subtropical or even temperate. The trees characteristically shed their leaves for a short period in the dry season to reduce water loss and produce a flush of new leaves just before the onset of the wet season with rich gold and red colours masking the underlying chlorophyll, reminiscent of autumn colours in the temperate zone. Miombo woodlands extend across south-central Africa, running from Angola in the west to Tanzania in the east, including parts of Democratic Republic of the Congo, Malawi, Mozambique, Zambia, and Zimbabwe. They are bounded on the north by the humid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Prey Of Sub-Saharan Africa
Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a four-chambered heart, and a strong yet lightweight Bird skeleton, 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 Order (biology), orders. More than half are passerine or "perching" birds. Birds have Bird wing, 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 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melierax
''Melierax'' is a genus of bird of prey in the family Accipitridae. Established by George Robert Gray in 1840, it contains the following species: The name ''Melierax'' is a combination of the Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ... words ''melos'', meaning "song" and ''hierax'', meaning "hawk". References External links Bird genera Taxa named by George Robert Gray Taxonomy articles created by Polbot {{Accipitriformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ayres's Hawk-eagle
Ayres's hawk-eagle (''Hieraaetus ayresii''), also referred to as Ayres' eagle,Newman, K (1998) Newman's Birds of Southern Africa. Halfway House: Southern Book Publishers. . is a medium-sized bird of prey in the family Accipitridae. It is native to African woodlands. Its name honours South African ornithologist Thomas Ayres. Description The adult male has blackish upper parts that are mottled with white and usually has a white forehead and supercilium. The upper-wing coverts are similar. The tail is ashy grey with a broad black tip and three to four narrower dark bars. Primary feathers and secondary feathers are black. The underparts are white, with heavy dark brown spots and blotches on the breast and belly, becoming sparser on the thighs and vent. The legs are well-feathered and pure white. The under-wing coverts are brown and marked with white, and the underside of flight feathers is dark and heavily barred lacking any noticeable grey patch. The eyes are yellow to orange, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wahlberg's Eagle
Wahlberg's eagle (''Hieraaetus wahlbergi'') is a bird of prey that is native to sub-Saharan Africa, where it is a seasonal migrant in the woodlands and savannas. It is named after the Swedish naturalist Johan August Wahlberg. Like all eagles, it belongs to the family Accipitridae. Description It is cross-shaped in flight with straight-edged wings and a square tail. Wahlberg's eagle is a medium-sized raptor, and the sexes are similar. It is about in length with a wingspan of and a body mass of for males and for females on average. The head has a small crest, and the legs are yellow. The plumage tone is variable but may be dark brown except for dark-streaked grey undersides to the flight feathers, and a barred grey undertail. Light and dark plumage phases occur. A pale variant may be much lighter brown with whitish, rather than grey undertail and flight feather undersides. The pale variant is much less common than the darker variant. Distribution and habitat Wahlberg's eagl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tawny Eagle
The tawny eagle (''Aquila rapax'') is a large bird of prey. Like all eagles, it belongs to the family ''Accipitridae''. Its heavily feathered legs mark it as a member of the subfamily Aquilinae, also known as booted eagles.Helbig, A. J., Kocum, A., Seibold, I., & Braun, M. J. (2005). ''A multi-gene phylogeny of aquiline eagles (Aves: Accipitriformes) reveals extensive paraphyly at the genus level''. Molecular phylogenetics and evolution, 35(1), 147-164. Tawny eagles have an extensive but discontinuous breeding range that constitutes much of the African continent as well as the Indian subcontinent, with rare residency in the southern Middle East. Throughout its range, it favours open dry habitats such as semideserts, deserts steppes, or savanna plains. Despite its preference for arid areas, the species seldom occurs in areas where trees are entirely absent.Hustler, K., & Howells, W. W. (1989). ''Habitat preference, breeding success and the effect of primary productivity on Tawny ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ploceidae
Ploceidae is a family of small passerine birds, many of which are called weavers, weaverbirds, weaver finches, or bishops. These names come from the nests of intricately woven vegetation created by birds in this family. In most recent classifications, the Ploceidae are a clade that excludes some birds that have historically been placed in the family, such as some of the Old World sparrow, sparrows, but which includes the monotypic subfamily Amblyospizinae. The family is believed to have originated in the mid-Miocene. All birds of the Ploceidae are native to the Old World, most in Africa south of the Sahara, though a few live in tropical areas of Asia. A few species have been Introduced species, introduced outside their native range. Taxonomy and systematics The family Ploceidae was introduced (as Ploceïdes) by Swedish zoologist Carl Jakob Sundevall in 1836. Phylogenetic studies have shown that the family is sister taxon, sister to a clade containing the families Viduidae and Estr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider
Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and rank seventh in total species diversity among all Order (biology), orders of organisms. Spiders are found worldwide on every continent except Antarctica, and have become established in nearly every land habitat. , 53,034 spider species in 136 Family (biology), families have been recorded by Taxonomy (biology), taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomy, Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segmentation (biology), segments are fused into two Tagma (biology), tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Namib Desert
The Namib ( ; ) is a coastal desert in Southern Africa. According to the broadest definition, the Namib stretches for more than along the Atlantic coasts of Angola, Namibia, and northwest South Africa, extending southward from the Carunjamba River in Angola, through Namibia and to the Olifants River in Western Cape, South Africa. The Namib's northernmost portion, which extends from the Angola-Namibia border, is known as Moçâmedes Desert, while its southern portion approaches the neighboring Kalahari Desert. From the Atlantic coast eastward, the Namib gradually ascends in elevation, reaching up to inland to the foot of the Great Escarpment. Annual precipitation ranges from in the aridest regions to at the escarpment, making the Namib the only true desert in southern Africa. Having endured arid or semi-arid conditions for roughly 55–80 million years, the Namib may be the oldest desert in the world and contains some of the world's driest regions, with only western South A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karoo
The Karoo ( ; from the Afrikaans borrowing of the South Khoekhoe Khoemana (also known as !Orakobab or Korana) word is a semidesert natural region of South Africa. No exact definition of what constitutes the Karoo is available, so its extent is also not precisely defined. The Karoo is partly defined by its topography, Karoo Supergroup, geology and climate, and above all, its low rainfall, arid air, cloudless skies, and extremes of heat and cold. The Karoo also hosted a well-preserved ecosystem hundreds of millions of years ago which is now represented by many fossils. The Karoo formed an almost impenetrable barrier to the interior from Cape Town, and the early adventurers, explorers, hunters, and travelers on the way to the Highveld unanimously denounced it as a frightening place of great heat, great frosts, great floods, and great droughts. Today, it is still a place of great heat and frosts, and an annual rainfall of between 50 and 250 mm, though on some of the mountains i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mopane
''Colophospermum mopane'', commonly called mopane, mopani, butterfly tree, turpentine tree, or balsam tree, is a tree in the legume family (Fabaceae), that grows in hot, dry, low-lying areas, in elevation, in parts of Southern Africa. The tree only occurs in Africa and is the only species in genus ''Colophospermum''. Its distinctive butterfly-shaped (bifoliate) leaf and thin kidney-shaped/nearly semi-circular legume, seed pod make it easy to identify. Though hard and dense and difficult to work with, it is valued timber in all sorts of construction due to its termite tolerance. Together with Acacia erioloba, camel thorn and Combretum imberbe, leadwood, one of the three regionally important firewood trees, due to the enduring heat, and these woods are also some of the preferred use culinarily for braai. Range and habitat The mopane is found on low-lying ground from (Mozambique) to (Zimbabwe). Mopane ecoregions Native to Southern Africa, its habitat is divided crudely into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
