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Ortygospiza
The quailfinch (''Ortygospiza atricollis'') is a species of the estrildid finch. It is found in open grasslands in Africa. They are gregarious seed-eaters with short, thick, red bills. They are very terrestrial, with lark-like feet and claws. Systematics Previously, three species were recognized, but are now considered subspecies: * Black-chinned quailfinch, ''Ortygospiza atricollis gabonensis'' * African quailfinch, ''Ortygospiza atricollis fuscocrissa'' * Black-faced quailfinch, ''Ortygospiza atricollis atricollis'' The locust finch, ''Paludipasser locustella'', is considered a member of this genus by some taxonomists. Two issues are contentious: First, whether the locustfinch should be included here or given its own monotypic genus. Second, the "African quailfinch" complex might comprise one or three (sub)species. The two-taxon arrangement as found in most field guides and used by the IUCN, was recently shown to be based only on a single character (the color of the chin an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ortygospiza
The quailfinch (''Ortygospiza atricollis'') is a species of the estrildid finch. It is found in open grasslands in Africa. They are gregarious seed-eaters with short, thick, red bills. They are very terrestrial, with lark-like feet and claws. Systematics Previously, three species were recognized, but are now considered subspecies: * Black-chinned quailfinch, ''Ortygospiza atricollis gabonensis'' * African quailfinch, ''Ortygospiza atricollis fuscocrissa'' * Black-faced quailfinch, ''Ortygospiza atricollis atricollis'' The locust finch, ''Paludipasser locustella'', is considered a member of this genus by some taxonomists. Two issues are contentious: First, whether the locustfinch should be included here or given its own monotypic genus. Second, the "African quailfinch" complex might comprise one or three (sub)species. The two-taxon arrangement as found in most field guides and used by the IUCN, was recently shown to be based only on a single character (the color of the chin an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Quailfinch
The African quailfinch, spectacled quailfinch, or white-chinned quailfinch (''Ortygospiza atricollis fuscocrissa''), is a common species of estrildid finch found in eastern and southern Africa. Some taxonomists consider it to be conspecific with the black-faced quailfinch, others consider all three species to be conspecific. Description The African quailfinch is 10 centimeters (4 inches) in length and weighs 9-14 grams (0.3-0.5 ounces). It is small and compact with dark grey underparts, barred breasts and flanks, and an orange-buff central belly. The feathers around its eye and on its chin are white. Breeding males have a red bill, while the bills of females and non-breeding males have a brown upper mandible and a red lower mandible. The female is paler than the male and has less distinctive barring. Voice It calls a tinny "chink-chink" when in flight. Distribution and ecology The African quailfinch is found in East and southern Africa. It inhabits grassland and weedy are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black-faced Quailfinch
The black-faced quailfinch (''Ortygospiza atricollis atricollis''), is a common subspecies of estrildid finch found in western and central of Africa. Some taxonomists consider it to be conspecific with the African quailfinch, others consider all three species to be conspecific. Origin Origin and phylogeny has been obtained by Antonio Arnaiz-Villena et al. Estrildinae may have originated in India and dispersed thereafter (towards Africa and Pacific Ocean habitats). References BirdLife Species Factsheet External links * Quail Finch/Black-faced quailfinch Species text in The Atlas of Southern African Birds * African Quailfinch (''Ortygospiza atricollis'') Species page in ''Handbook of the Birds of the World Alive'' black-faced quailfinch Birds of Sub-Saharan Africa black-faced quailfinch The black-faced quailfinch (''Ortygospiza atricollis atricollis''), is a common subspecies of estrildid finch found in western and central of Africa. Some taxonomists consider it to be consp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estrildid Finch
Estrildidae, or estrildid finches, is a family of small seed-eating passerine birds of the Old World tropics and Australasia. They comprise species commonly known as munias, mannikins, firefinches, parrotfinches and waxbills. Despite the word "finch" being included in the common names of some species, they are not closely related to birds with this name in other families, such as the Fringillidae, Emberizidae or Passerellidae. They are gregarious and often colonial seed eaters with short, thick, but pointed bills. They are all similar in structure and habits, but vary widely in plumage colours and patterns. All estrildids build large, domed nests and lay five to ten white eggs. Many species build roost nests. Some of the firefinches and pytilias are hosts to the brood-parasitic indigobirds and whydahs, respectively. Most are sensitive to cold and require warm, usually tropical, habitats, although a few, such as the eastern alpine mannikin, mountain firetail, red-browed f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black-chinned Quailfinch
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The black-chinned quailfinch (''Ortygospiza atricollis gabonensis'') also known as the red-billed quailfinch, is a common subspecies of estrildid finch found in central Africa. It has an estimated global extent of occurrence of 450,000 km2. It is found in Angola, Burundi, the Republic of Congo, the Democratic Republic of the Congo, Equatorial Guinea, Gabon, Rwanda, Tanzania and Zambia. The IUCN has classified the species as being of least concern. Some taxonomists consider it to be conspecific with the other species of quailfinch. References External linksBirdLife International species factsheet black-chinned quailfinch Birds of Central Africa black-chinned quailfinch The black-chinned quailfinch (''Ortygospiza atricollis gabonensis'') also known as the red-billed quailfinch, is a common subspecies of estrildid finch found in central Africa. It has an estimated global extent of occurrence of 450,000 km2. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locust Finch
The locust finch or locustfinch (''Paludipasser locustella'') is a species of waxbill found in south-central and south-eastern Africa. It is the only species in the genus ''Paludipasser''. It is sometimes placed in the genus ''Ortygospiza''. Taxonomy The locust finch was first formally described in 1909 by the English naturalist and entomologist Sheffield Airey Neave with the type, a subadl male, being collected at the Upper Luansenshi River, north-east of Bangweolo, Northern Rhodesia, i.e. Zambia. Neave placed in the monotypic genus ''Paludipasser'' within the waxbill family Estrildidae but it has been placed in the same genus as the quailfinch, ''Ortygospiza''. Description The locust finch is similar to the quailfinch but males have a red face, throat and breast with rufous wings and black body with white spots but with a plain back belly. The females also have rufous wings and lack the white face markings of female quailfinches while immatures have black and brown streak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNA Sequence
DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA. It includes any method or technology that is used to determine the order of the four bases: adenine, guanine, cytosine, and thymine. The advent of rapid DNA sequencing methods has greatly accelerated biological and medical research and discovery. Knowledge of DNA sequences has become indispensable for basic biological research, DNA Genographic Projects and in numerous applied fields such as medical diagnosis, biotechnology, forensic biology, virology and biological systematics. Comparing healthy and mutated DNA sequences can diagnose different diseases including various cancers, characterize antibody repertoire, and can be used to guide patient treatment. Having a quick way to sequence DNA allows for faster and more individualized medical care to be administered, and for more organisms to be identified and cataloged. The rapid speed of sequencing attained with modern D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulletin Of The British Ornithologists' Club
The ''Bulletin of the British Ornithologists' Club'' is an ornithological journal published by the British Ornithologists' Club (BOC). It is cited as ''Bull. B. O. C.'' Many descriptions of birds new to science have been published in the bulletin. The journal was first published in 1892. It is published in four quarterly issues. from March 2017 (Vol. 137 No. 1), it became an online-only, open access, journal, giving as the reasons for the change: Since 2004, the journal's honorary editor has been Guy Kirwan. List of editors List of Bulletin Editors with dates of tenure * Richard Bowdler Sharpe 1892–1904 * W. R. Ogilvie-Grant 1904–1914 * David Armitage Bannerman 1914–1915 * D. Seth-Smith 1915–1920 * Percy R. Lowe 1920–1925 * Norman B. Kinnear 1925–1930 * G. Carmichael Low 1930–1935 and 1940–1945 * C. H. B. Grant 1935–1940 and 1947–1952 * W. P. C. Tenison 1945–1947 * J. G. Harrison 1952–1961 * J.J. Yealland 1962–1969 * C.W. Benson 1969–19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helm Identification Guides
The ''Helm Identification Guides'' are a series of books that identify groups of birds. The series include two types of guides, those that are: * Taxonomic, dealing with a particular family of birds on a worldwide scale—most early Helm Guides were this type, as well as many more-recent ones, although some later books deal with identification of such groups on a regional scale only (e.g., ''The Gulls Guide,'' which covers only species in Europe, Asia, and North America) * Geographic, including all bird species in an area (e.g., ''The Birds of the West Indies'') Early volumes were sometimes published under the Croom Helm or Christopher Helm imprints. In addition, a parallel set of guides, very similar in design, was published by Pica Press in the 1990s (marked ''Pica'' in the list below); Pica was later absorbed into A & C Black (now part of Bloomsbury Publishing Plc), and all guides are now marketed as a single series. Several of the books have won the British Birds ''Bird B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene Flow
In population genetics, gene flow (also known as gene migration or geneflow and allele flow) is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent allele frequencies and therefore can be considered a single effective population. It has been shown that it takes only "one migrant per generation" to prevent populations from diverging due to drift. Populations can diverge due to selection even when they are exchanging alleles, if the selection pressure is strong enough. Gene flow is an important mechanism for transferring genetic diversity among populations. Migrants change the distribution of genetic diversity among populations, by modifying allele frequencies (the proportion of members carrying a particular variant of a gene). High rates of gene flow can reduce the genetic differentiation between the two groups, increasing homogeneity. For this reason, gene flow has been thought to con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
