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Red-collared Widowbird
The red-collared widowbird (''Euplectes ardens'') is a species of bird in the family Ploceidae. Red-collared widowbirds are found in grasslands and bush clearings in Eastern and Southern Africa. They are known for their long tails and brilliant red badges, both which act as sexual ornaments. They are often associated with other widowbird and bishop species. They are polygynous, where males acquisition of territory is an important determinant in their access to mates. Red-collared widowbirds have a wide range and there is little concern in terms of conservation status. Taxonomy The red-collared widowbird was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in 1779 in his '' Histoire Naturelle des Oiseaux'' from a specimen collected in the Cape of Good Hope region of South Africa. The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the ''Planches Enluminées D'Histoire Naturelle'' which was produced under the super ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pieter Boddaert
Pieter Boddaert (1730 – 6 May 1795) was a Dutch physician and natural history, naturalist. Early life, family and education Boddaert was the son of a Middelburg jurist and poet by the same name (1694–1760). The younger Pieter obtained his M.D. at the University of Utrecht in 1764. Career He became a lecturer on natural history at his alma mater, University of Utrecht. Fourteen letters survive of his correspondence with Carl Linnaeus between 1768 and 1775. He was a friend of Albert Schlosser, whose Cabinet of curiosities, cabinet of "curiosities" of natural history he described. In 1783 he published 50 copies of an identification key of Edmé-Louis Daubenton's ''Planches enluminées'', the colored plates of illustrations for the comte de Buffon's monumental ''Histoire Naturelle'' (published 1749–1789), assigning binomial scientific names to the plates. As many of these were the first Linnaean taxonomy, Linnaean scientific names to be proposed, they remain in use. In 2017 the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fan-tailed Widowbird
The fan-tailed widowbird (''Euplectes axillaris''), also known as the red-shouldered widowbird, is a species of bird in the family Ploceidae, which is native to grassy and swampy areas of the tropical and subtropical Afrotropics. Range It is found in Angola, Botswana, Burundi, Cameroon, Central African Republic, Chad, Republic of the Congo, DRC, Eswatini, Ethiopia, Kenya, Lesotho, Malawi, Mali, Mozambique, Namibia, Niger, Nigeria, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda, Zambia, and Zimbabwe. Races There are five accepted races: * ''E. a.'' subsp. ''bocagei'' (Sharpe, 1871) – West Africa from Mali to CAR and DRC, and southwards to the Caprivi Strip, Okavango and upper Zambezi The Zambezi River (also spelled Zambeze and Zambesi) is the fourth-longest river in Africa, the longest east-flowing river in Africa and the largest flowing into the Indian Ocean from Africa. Its drainage basin covers , slightly less than hal ... regions. * ''E. a.'' subsp. ''phoen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow Bishop
The yellow bishop (''Euplectes capensis''), also known as Cape bishop, Cape widow or yellow-rumped widow, is a resident breeding bird species in Angola, Botswana, Burundi, Cameroon, Congo, Equatorial Guinea, Eswatini, Ethiopia, Kenya, Lesotho, Malawi, Mozambique, Nigeria, Rwanda, South Africa, South Sudan, Tanzania, Uganda, Zambia and Zimbabwe. This common weaver occurs in less arid vegetated areas, such as fynbos, moist grassland and bracken-covered valleys at altitudes from sea level to the Ethiopian highlands. Taxonomy In 1760 the French zoologist Mathurin Jacques Brisson included a description of the yellow bishop in his ''Ornithologie'' based on a specimen collected from the Cape of Good Hope. He used the French name ''Le pinçon du Cap de Bonne Espérance'' and the Latin ''Fringilla Capitis Bonae Spei''. The two stars (**) at the start of the section indicates that Brisson based his description on the examination of a specimen. Although Brisson coined Latin names, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White-winged Widowbird
The white-winged widowbird (''Euplectes albonotatus'') is a species of passerine bird in the family Ploceidae native to Africa south of the Sahara. It is highly sexually dimorphic in its breeding season, during which the male's yellow plumage turns dark and he gains more white feathers, contrasting with the female's predominantly pale coloration. Three subspecies are recognised. Taxonomy The white-winged widowbird was first described by the American ornithologist John Cassin in 1848. Hybrids with "red bishops", probably northern red bishop (''E. franciscanus''), have been reported in captivity. Non-captive interbreeding of race ''eques'' with nominate appears to occur in southern Tanzania, but they appear to stay segregated in Burundi and western Tanzania. A proposal has been made for race ''sassii'', which is found along the northwestern shore of Lake Tanganyika. Alternate common names include: white-fronted/white-shouldered widowbird, white-winged/white-shouldered whydah, lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red-billed Quelea
The red-billed quelea (; ''Quelea quelea''), also known as the red-billed weaver or red-billed dioch, is a small—approximately long and weighing —migratory, sparrow-like bird of the weaver family, Ploceidae, native to Sub-Saharan Africa. It was named by Linnaeus in 1758, who considered it a bunting, but Ludwig Reichenbach assigned it in 1850 to the new genus ''Quelea''. Three subspecies are recognised, with ''Quelea quelea quelea'' occurring roughly from Senegal to Chad, ''Q. q. aethiopica'' from Sudan to Somalia and Tanzania, and ''Q. q. lathamii'' from Gabon to Mozambique and South Africa. Non-breeding birds have light underparts, striped brown upper parts, yellow-edged flight feathers and a reddish bill. Breeding females attain a yellowish bill. Breeding males have a black (or rarely white) facial mask, surrounded by a purplish, pinkish, rusty or yellowish wash on the head and breast. The species avoids forests, deserts and colder areas such as those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorghum
''Sorghum'' () is a genus of about 25 species of flowering plants in the grass family (Poaceae). Some of these species are grown as cereals for human consumption and some in pastures for animals. One species is grown for grain, while many others are used as fodder plants, either cultivated in warm climates worldwide or naturalized in pasture lands. Taxonomy ''Sorghum'' is in the Poaceae (grass) subfamily Panicoideae and the tribe Andropogoneae (the same as maize, big bluestem and sugarcane). Species Accepted species recorded include: Distribution and habitat Seventeen of the 25 species are native to Australia, with the range of some extending to Africa, Asia, Mesoamerica, and certain islands in the Indian and Pacific Oceans. Toxicity In the early stages of the plants' growth, some species of sorghum can contain levels of hydrogen cyanide, hordenine, and nitrates, which are lethal to grazing animals. Plants stressed by drought or heat can also contain toxic lev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorfulness
Colorfulness, chroma and saturation are attributes of perceived color relating to chromatic intensity. As defined formally by the International Commission on Illumination (CIE) they respectively describe three different aspects of chromatic intensity, but the terms are often used loosely and interchangeably in contexts where these aspects are not clearly distinguished. The precise meanings of the terms vary by what other functions they are dependent on. * Colorfulness is the "attribute of a visual perception according to which the perceived color of an area appears to be more or less chromatic"., page 87. The colorfulness evoked by an object depends not only on its spectral reflectance but also on the strength of the illumination, and increases with the latter unless the brightness is very high ( Hunt effect). * Chroma is the "colorfulness of an area judged as a proportion of the brightness of a similarly illuminated area that appears white or highly transmitting". As a resu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carotenoid
Carotenoids (), also called tetraterpenoids, are yellow, orange, and red organic compound, organic pigments that are produced by plants and algae, as well as several bacteria, and Fungus, fungi. Carotenoids give the characteristic color to pumpkins, carrots, parsnips, maize, corn, tomatoes, Domestic Canary, canaries, flamingos, salmon, lobster, shrimp, and daffodils. Carotenoids can be produced from Lipid, fats and other basic organic metabolic building blocks by all these organisms. It is also produced by Endosymbiont, endosymbiotic bacteria in Whitefly, whiteflies. Carotenoids from the diet are stored in the fatty tissues of animals, and exclusively Carnivore, carnivorous animals obtain the compounds from animal fat. In the human diet, Small intestine#Absorption, absorption of carotenoids is improved when consumed with fat in a meal. Cooking carotenoid-containing vegetables in oil and shredding the vegetable both increase carotenoid bioavailability. There are over 1,100 known c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handbook Of The Birds Of The World
The ''Handbook of the Birds of the World'' (HBW) is a multi-volume series produced by the Spanish publishing house Lynx Edicions in partnership with BirdLife International. It is the first handbook to cover every known living species of bird. The series was edited by Josep del Hoyo, Andrew Elliott, Jordi Sargatal and David A. Christie. All 16 volumes have been published. For the first time an animal class will have all the species illustrated and treated in detail in a single work. This has not been done before for any other group in the animal kingdom. Material in each volume is grouped first by family, with an introductory article on each family; this is followed by individual species accounts (taxonomy, subspecies and distribution, descriptive notes, habitat, food and feeding, breeding, movements, status and conservation, bibliography). In addition, all volumes except the first and second contain an essay on a particular ornithological theme. More than 200 renowned speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victor Gurney Logan Van Someren
Victor Gurney Logan Van Someren (1886 in Melbourne – 24 July 1976) was a zoologist and entomologist. Van Someren was born in Australia. He attended George Watson's College and studied zoology at University of Edinburgh. He was also a dentist. Van Someren moved to Kenya in 1912 and lived in Nairobi. He was in the East Africa and Uganda Natural History Society and became Honorary Secretary. In 1930 he became Curator of the Coryndon Museum. Van Someren named a number of bird and butterfly species. Species named after him include the fish '' Labeobarbus somereni''. Works *Bird Life in Uganda *Notes on Birds of Uganda and East Africa * with Thomas Herbert Elliot Jackson, 1952 The Charaxes etheocles-ethalion complex: a tentative reclassification of the group (Lepidoptera: Nymphalidae). ''Transactions of the Royal Entomological Society of London'' 103:257–284. *with Jackson, T.H.E., 1957 The Charaxes etheocles-ethalion complex (Lepidoptera: Nymphalidae). Supplement No. 1. ''An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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