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Sahelian Woodpecker
The little grey woodpecker (''Dendropicos elachus''), also known as the Sahelian woodpecker, is a species of bird in the family Picidae. It is found in Cameroon, Chad, Gambia, Mali, Mauritania, Niger, Nigeria, Senegal, and Sudan. This species is described as somewhat rare, but it has a very large range and the population appears to be steady, so the International Union for Conservation of Nature has rated its conservation status as being of " least concern". Description The little grey woodpecker is a very small woodpecker, growing to a length of between . The beak is relatively long and broad. The male has a red hind crown and nape while the female lacks these. Otherwise the sexes are similar. The head is brown with a slight white supercilium and a narrow darker brown moustachial stripe. The upper parts of the body are greyish-brown barred with white and so are the wings and tail. The rump and upper tail coverts are red, which is particularly noticeable in flight. The bea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry Church Oberholser
Harry Church Oberholser (June 25, 1870 – December 25, 1963) was an American ornithologist. Biography Harry Oberholser was born to Jacob and Lavera S. Oberholser on June 25, 1870, in Brooklyn, New York. He attended Columbia University, but did not graduate. Later Oberholser was awarded degrees (B.A., M.S., and PhD.) from the George Washington University. He married Mary Forrest Smith on June 30, 1914. From 1895 to 1941, he was employed by the United States Bureau of Biological Survey (later the United States Fish and Wildlife Service) as an ornithologist, biologist, and editor. During his career, he collected bird specimens while on trips with Vernon Bailey and Louis Agassiz Fuertes. In 1928, Oberholser helped organize thWinter Waterfowl Survey which continues to this day. In 1941, at the age of 70, he became curator of ornithology at the Cleveland Museum of Natural History. Oberholser was the author of a number of books and articles. A complete manuscript of his work is avai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Described In 1919
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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Sahel
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. Birds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendropicos
''Dendropicos'' is a genus of woodpeckers in the family Picidae. They are small woodpeckers that are native to the sub-Saharan woodlands and forests. Taxonomy The genus ''Dendropicos'' was introduced by the French ornithologist, Alfred Malherbe in 1849. The type species was subsequently designated as one of the subspecies of the cardinal woodpecker. The word ''Dendropicos'' comes from the Greek ''dendron'' meaning tree and ''pikos'' for woodpecker. Molecular genetic studies have shown that the genus ''Dendropicos'' is sister to the genus ''Chloropicus''. The genus ''Dendropicos'' formerly contained several additional species. A 2015 molecular phylogenetic study that analysed nuclear and mitochondrial DNA sequences from pied woodpeckers found that ''Dendropicos'' was polyphyletic. In the rearranged genera the bearded, fire-bellied and yellow breasted woodpeckers were moved to ''Chloropicus'' while the Arabian woodpecker was moved to ''Dendrocoptes''. The taxonomic committee of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balanites
''Balanites'' is an Afrotropical, Palearctic and Indomalayan genus of flowering plants in the caltrop family, Zygophyllaceae. The name ''Balanites'' derives from the Greek word for an acorn and refers to the fruit, it was coined by Alire Delile in 1813. Species The following species are included in the genus ''Balanites'': * ''Balanites aegyptiaca'' ( L.) Delile *''Balanites angolensis'' (Welw.) Mildbr. & Schltr. *''Balanites glabra'' Mildbr. & Schltr. * ''Balanites maughamii'' Sprague *''Balanites pedicellaris'' Mildbr. & Schltr. *''Balanites rotundifolia'' (Tiegh.) Blatt. * '' Balanites roxburghii'' Planch. *''Balanites triflora'' Tiegh. *''Balanites wilsoniana ''Balanites wilsoniana'' is a species of fruit-bearing tree from west and central Africa from the caltrop family (Zygophyllaceae). Description ''Balanites wilsoniana'', commonly called the Boko Tree, is a tall forest tree with high buttresses, w ...'' Dawe & Sprague References External links * * * {{Tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is New Latin, borrowed from the Greek (), a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of ''Vachellia nilotica'', the original type of the genus. In his ''Pinax'' (1623), Gaspard Bauhin mentioned the Greek from Dioscorides as the origin of the Latin name. In the early 2000s it had become evident that the genus as it stood was not monophyletic and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia, New Guinea, and Indonesia was not closely related to the much smaller group of African lineage that contained ''A. nilotica''—the type species. This meant that the Australasian lineage (by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown-backed Woodpecker
The brown-backed woodpecker (''Dendropicos obsoletus'') is a species of bird in the woodpecker family Picidae. It is found in a belt across the savannah region of sub-Saharan Africa from Senegal in the west to Ethiopia, Kenya and Tanzania in the east. It is generally uncommon, but has a very large range and the population appears to be steady, so the International Union for Conservation of Nature has rated its conservation status as being of " least concern". Taxonomy The brown-backed woodpecker was described by the German naturalist Johann Georg Wagler in 1829 under the binomial name ''Picus obsoletus''. He specified the type locality as Senegambia. The specific epithet is from the Latin ''obsoletus'' meaning "plain" or "ordinary". Before the introduction of molecular phylogenetics the relationship to other woodpeckers was uncertain. In 1948 the American ornithologist James Peter placed the brown-backed woodpecker in the genus ''Dendrocopos'' in his ''Check-List of Birds o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercilium
The supercilium is a plumage feature found on the heads of some bird species. It is a stripe which runs from the base of the bird's beak above its eye, finishing somewhere towards the rear of the bird's head.Dunn and Alderfer (2006), p. 10 Also known as an "eyebrow", it is distinct from the eyestripe, which is a line that runs across the lores, and continues behind the eye. Where a stripe is present only above the lores, and does not continue behind the eye, it is called a supraloral stripe or simply supraloral. On most species which display a supercilium, it is paler than the adjacent feather tracts. The colour, shape or other features of the supercilium can be useful in bird identification. For example, the supercilium of the dusky warbler, an Old World warbler species, can be used to distinguish it from the very similar Radde's warbler. The dusky warbler's supercilium is sharply demarcated, whitish and narrow in front of the eye, becoming broader and more buffy towards the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least-concern Species
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. They do not qualify as threatened, near threatened, or (before 2001) conservation dependent. Species cannot be assigned the "Least Concern" category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution or population status. Evaluation Since 2001 the category has had the abbreviation "LC", following the IUCN 2001 Categories & Criteria (version 3.1). Before 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or lc. Around 20% of least concern taxa (3261 of 15636) in the IUCN database still use the code "LR/lc", which indicates they have not been re-evaluate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sudan
Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic to the southwest, Chad to the west, Egypt to the north, Eritrea to the northeast, Ethiopia to the southeast, Libya to the northwest, South Sudan to the south and the Red Sea. It has a population of 45.70 million people as of 2022 and occupies 1,886,068 square kilometres (728,215 square miles), making it Africa's List of African countries by area, third-largest country by area, and the third-largest by area in the Arab League. It was the largest country by area in Africa and the Arab League until the 2011 South Sudanese independence referendum, secession of South Sudan in 2011, since which both titles have been held by Algeria. Its Capital city, capital is Khartoum and its most populated city is Omdurman (part of the metropolitan area of Khar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird
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. B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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