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Little Greenbul
The little greenbul (''Eurillas virens'') is a species of the bulbul family of passerine birds. It is found in many parts of sub-Saharan Africa. Taxonomy and systematics The little greenbul was originally described in the genus '' Andropadus'' and was re-classified to the genus ''Eurillas'' in 2010. Alternatively, some authorities classify the little greenbul in the genus ''Pycnonotus''. Subspecies Five subspecies are recognized: * ''E. v. amadoni'' - ( Dickerman, 1997): Found on Bioko * Upper Guinea little greenbul (''E. v. erythroptera'') - ( Hartlaub, 1858): Found from Gambia to southern Nigeria * ''E. v. virens'' - ( Cassin, 1857): Found from western Cameroon to southern Sudan, western Kenya, southern Democratic Republic of Congo and northern Angola * ''E. v. zanzibarica'' - Pakenham, 1935: Found on Zanzibar * ''E. v. zombensis'' - ( Shelley, 1894): Found from south-eastern Democratic Republic of Congo and northern Zambia to south-eastern Kenya and northern Mozambique. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Kingdom
Bird Kingdom is an aviary in the tourist district of Niagara Falls, Ontario, Canada. Opened in May 2003, it is the largest free flying indoor aviary in the world. The attraction encompasses approximately , and houses over 350 birds, the majority of which come from Australia, South America, and Africa. It is also home to mammals, reptiles and amphibians which are part of educational programs. Bird Kingdom has been voted a top family attraction in Niagara Falls and was inducted into the Trip Advisor Hall of Fame in 2016. Areas Small Bird Aviary This section of the aviary houses smaller birds. The Small Aviary houses over fifty types of birds, among which are some endangered and rare species. It overlooks the Niagara Gorge, a well known bird watching spot and bird breeding ground. Night Jungle An area where nocturnal animals can be seen. Egyptian Fruit Bats, Owls and other creatures of the night can be found in the ancient ruins of the night jungle. Main Aviary The $16 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Ernest Shelley
Captain George Ernest Shelley (15 May 1840 – 29 November 1910) was an English geologist and ornithologist. He was a nephew of the poet Percy Bysshe Shelley. Shelley was educated at the Lycée de Versailles and served a few years in the Grenadier Guards "Shamed be whoever thinks ill of it." , colors = , colors_label = , march = Slow: " Scipio" , mascot = , equipment = , equipment .... His books included ''A Monograph of the Cinnyridae, or Family of Sun Birds'' (1878), ''A Handbook to the Birds of Egypt'' (1872) and ''The Birds of Africa'' (5 volumes, 1896–1912) illustrated by J. G. Keulemans. (with bibliography of publications by G. E. Shelley) References External links * Illustrations appearing in Handbook to the Birds of Egypt 1840 births 1910 deaths English geologists English ornithologists Grenadier Guards officers Place of birth missing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Gulf Of Guinea
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. Bird ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurillas
''Eurillas'' is a genus of greenbuls, passerine birds in the bulbul family Pycnonotidae. Taxonomy The genus ''Eurillas'' was introduced in 1899 by the American ornithologist Harry C. Oberholser with the little greenbul as the type species. The genus name combines the Ancient Greek ''eurus'' meaning "broad" or "wide" and ''illas'' meaning "thrush". This genus was formerly synonymized with the genus '' Andropadus''. A molecular phylogenetic study of the bulbul family published in 2007 found that ''Andropadus'' was polyphyletic. In the revision to the generic classification five species were moved from ''Andropadus'' to the resurrected genus ''Eurillas''. Species The genus contains five species: * Little greenbul (''Eurillas virens'') * Yellow-whiskered greenbul (''Eurillas latirostris'') * Plain greenbul (''Eurillas curvirostris'') * Little grey greenbul (''Eurillas gracilis'') * Ansorge's greenbul Ansorge's greenbul (''Eurillas ansorgei'') or Ansorge's bulbul, is a species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecotone
An ecotone is a transition area between two biological communities, where two communities meet and integrate. It may be narrow or wide, and it may be local (the zone between a field and forest) or regional (the transition between forest and grassland ecosystems). An ecotone may appear on the ground as a gradual blending of the two communities across a broad area, or it may manifest itself as a sharp boundary line. Etymology The word ''ecotone'' was coined by Alfred Russel Wallace, who first observed the abrupt boundary between two biomes in 1859. It is formed as a combination of ''ecology'' plus ''-tone'', from the Greek ''tonos'' or tension – in other words, a place where ecologies are in tension. Features There are several distinguishing features of an ecotone. First, an ecotone can have a sharp vegetation transition, with a distinct line between two communities. For example, a change in colors of grasses or plant life can indicate an ecotone. Second, a change in physiogn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. According to '' Britannica'', there exists four savanna forms; ''savanna woodland'' where trees and shrubs form a light canopy, ''tree savanna'' with scattered trees and shrubs, ''shrub savanna'' with distributed shrubs, and ''grass savanna'' where trees and shrubs are mostly nonexistent.Smith, Jeremy M.B.. "savanna". Encyclopedia Britannica, 5 Sep. 2016, https://www.britannica.com/science/savanna/Environment. Accessed 17 September 2022. Savannas maintain an open canopy despite a high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest
A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' Food and Agriculture Organization (FAO) defines a forest as, "Land spanning more than 0.5 hectares with trees higher than 5 meters and a canopy cover of more than 10 percent, or trees able to reach these thresholds ''in situ''. It does not include land that is predominantly under agricultural or urban use." Using this definition, '' Global Forest Resources Assessment 2020'' (FRA 2020) found that forests covered , or approximately 31 percent of the world's land area in 2020. Forests are the predominant terrestrial ecosystem of Earth, and are found around the globe. More than half of the world's forests are found in only five countries (Brazil, Canada, China, Russia, and the United States). The largest share of forests (45 percent) are in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and light intensity. Biotic factors will include the availability of food and the presence or absence of predators. Every species has particular habitat requirements, with habitat generalist species able to thrive in a wide array of environmental conditions while habitat specialist species requiring a very limited set of factors to survive. The habitat of a species is not necessarily found in a geographical area, it can be the interior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Greenbul (Andropadus Virens) Near Water
The little greenbul (''Eurillas virens'') is a species of the bulbul family of passerine birds. It is found in many parts of sub-Saharan Africa. Taxonomy and systematics The little greenbul was originally described in the genus '' Andropadus'' and was re-classified to the genus ''Eurillas'' in 2010. Alternatively, some authorities classify the little greenbul in the genus ''Pycnonotus''. Subspecies Five subspecies are recognized: * ''E. v. amadoni'' - ( Dickerman, 1997): Found on Bioko * Upper Guinea little greenbul (''E. v. erythroptera'') - ( Hartlaub, 1858): Found from Gambia to southern Nigeria * ''E. v. virens'' - ( Cassin, 1857): Found from western Cameroon to southern Sudan, western Kenya, southern Democratic Republic of Congo and northern Angola * ''E. v. zanzibarica'' - Pakenham, 1935: Found on Zanzibar * ''E. v. zombensis'' - ( Shelley, 1894): Found from south-eastern Democratic Republic of Congo and northern Zambia to south-eastern Kenya and northern Mozambique. Incl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melanism
The term melanism refers to black pigment and is derived from the gr, μελανός. Melanism is the increased development of the dark-colored pigment melanin in the skin or hair. Pseudomelanism, also called abundism, is another variant of pigmentation, identifiable by dark spots or enlarged stripes, which cover a large part of the body of the animal, making it appear melanistic. The morbid deposition of black matter, often of a malignant character causing pigmented tumors, is called melanosis. Adaptation Melanism related to the process of adaptation is called adaptive. Most commonly, dark individuals become Fitness (biology), fitter to survive and reproduce in their environment as they are better camouflaged. This makes some species less conspicuous to predators, while others, such as leopards, use it as a foraging advantage during night hunting. Typically, adaptive melanism is Heritability, heritable: A Dominance (genetics), dominant allele, which is entirely or nearly ent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pat Hall
Beryl Patricia Hall, née Woodhouse (13 June 1917 – 26 August 2010) was a British ornithologist, associated with the Natural History Museum. She is best known for her work on African birds. She also wrote a book of whimsical poems with Derek Goodwin called the ''Bird Room Ballads'' (1969). Pat grew up in Epson, Surrey, born in an upper-middle-class family. Her ambition was to study mathematics at Cambridge but she failed to pursue it due to opposition from her parents. Forced to spend several years at home, she took to watching birds and then decided to sign up for the Women's Legion in 1939. Her work involved teaching ambulance driving and precautions during Air Raids. She got engaged to John Hall, a lieutenant in the army who was posted in the Middle East. She was initially posted to South Africa and she transferred to Egypt in March 1941 allowing her to marry John. After the war she returned to the UK and in 1947, following a failed marriage, she took up a position as a sci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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