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Western Gerygone
The western gerygone (''Gerygone fusca'') is a small, brownish-grey species of passerine bird, which is found in inland and Southwest Australia, south-west Australia. It is an arboreal, insectivore of open forest, woodland and dry shrubland. It is not currently threatened with extinction (IUCN Red List, IUCN: Least-concern species, Least Concern). Systematics and taxonomy The western gerygone is a member of the family Acanthizidae (Thornbills and Allies), which has been split from the family Pardalotidae (Pardalotes). It is a Sister species, sister-species to the mangrove gerygone (''Gerygone levigaster''). The close relationship of this Phylogenetic tree, phylogenetic pair is suggested by analyses of both Morphology (biology), morphological characteristics and genetic loci. Populations of a common ancestor of the two species are thought to have divergent evolution, diverged after becoming fragmented by severe aridity during the Pleistocene. These two species are now in seco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Gould
John Gould (; 14 September 1804 – 3 February 1881) was an English ornithologist. He published a number of monographs on birds, illustrated by plates produced by his wife, Elizabeth Gould, and several other artists, including Edward Lear, Henry Constantine Richter, Joseph Wolf and William Matthew Hart. He has been considered the father of bird study in Australia and the Gould League in Australia is named after him. His identification of the birds now nicknamed "Darwin's finches" played a role in the inception of Darwin's theory of evolution by natural selection. Gould's work is referenced in Charles Darwin's book, ''On the Origin of Species''. Early life Gould was born in Lyme Regis, the first son of a gardener. Both father and son probably had little education. After working on Dowager Lady Poulett's glass house, his father obtained a position on an estate near Guildford, Surrey, and then in 1818, Gould Snr became foreman in the Royal Gardens of Windsor. Gould then be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetic Loci
In genetics, a locus (plural loci) is a specific, fixed position on a chromosome where a particular gene or genetic marker is located. Each chromosome carries many genes, with each gene occupying a different position or locus; in humans, the total number of protein-coding genes in a complete haploid set of 23 chromosomes is estimated at 19,000–20,000. Genes may possess multiple variants known as alleles, and an allele may also be said to reside at a particular locus. Diploid and polyploid cells whose chromosomes have the same allele at a given locus are called homozygous with respect to that locus, while those that have different alleles at a given locus are called heterozygous. The ordered list of loci known for a particular genome is called a gene map. Gene mapping is the process of determining the specific locus or loci responsible for producing a particular phenotype or biological trait. Association mapping, also known as "linkage disequilibrium mapping", is a method of ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerygone
''Gerygone'' (), the gerygones or peep-warblers, is a genus of bird in the family Acanthizidae. The genus ranges from Southeast Asia through New Guinea and Australia to New Zealand and the Chatham Islands. Most of the species are found in Australia and New Guinea; only one, the golden-bellied gerygone, has managed to cross Wallace's Line and colonise as far as Thailand, Malaysia and the Philippines. Gerygones are insectivores which obtain most of their food by gleaning and snatching in the foliage of trees and bushes. They are small, mostly weighing an average of 6–7 g, and show little variation in size across their range, except for the insular Chatham gerygone, which is nearly twice as large as the rest of the genus. Their songs are described as "simple but delightful", many descending in pitch, and some species are excellent mimics. "Gerygone" means "born of sound" (Magrath 2003). The genus contains 20 species including one which is now extinct: * Brown gerygone, ''Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Terms Used In Bird Topography
The following is a list of terms used in bird topography: Plumage features * Back * Belly * Breast * Cheek * Chin * Crest * Crown * Crown patch * Ear-coverts * Eye-ring * Eyestripe (or eye line) * Feather, see category: :Feathers * Flanks * Forecrown * Gorget * Hood (or half-hood) * Lateral throat stripe * Lores * Malar * Mantle * Mask * Moustachial stripe * Nape * Nuchal collar * Operculum (on pigeons). * Pennaceous feathers * Postocular stripe * Remiges * Rump * Spectacles * Submoustachial stripe * Supercilium * Supraloral * Parts of the tail include: **Rectrices ** Tail corner ** Terminal band ***Subterminal band * Throat * Undertail coverts * Upper mandible (or maxilla) * Uppertail coverts * Vent, crissum or cloaca ** Vent band *Parts of the wings include: ** Alula ** Apical spot ** Axillar ** Bend of wing ** Carpal covert ** Emargination ** Greater coverts ** Leading edge of wing ** Lesser coverts ** Marginal coverts ** Median coverts ** Mirror (on gulls) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flight Feather
Flight feathers (''Pennae volatus'') are the long, stiff, asymmetrically shaped, but symmetrically paired pennaceous feathers on the wings or tail of a bird; those on the wings are called remiges (), singular remex (), while those on the tail are called rectrices (), singular rectrix (). The primary function of the flight feathers is to aid in the generation of both thrust and lift (force), lift, thereby enabling bird flight, flight. The flight feathers of some birds have evolved to perform additional functions, generally associated with territorial displays, courtship rituals or feeding methods. In some species, these feathers have developed into long showy plumes used in visual courtship displays, while in others they create a sound during display flights. Tiny serrations on the leading edge of their remiges help owls to fly silently (and therefore hunt more successfully), while the extra-stiff rectrices of woodpeckers help them to brace against tree trunks as they hammer on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Gerygone (subspecies Fusca)
The western gerygone (''Gerygone fusca'') is a small, brownish-grey species of passerine bird, which is found in inland and south-west Australia. It is an arboreal, insectivore of open forest, woodland and dry shrubland. It is not currently threatened with extinction (IUCN: Least Concern). Systematics and taxonomy The western gerygone is a member of the family Acanthizidae (Thornbills and Allies), which has been split from the family Pardalotidae (Pardalotes). It is a sister-species to the mangrove gerygone (''Gerygone levigaster''). The close relationship of this phylogenetic pair is suggested by analyses of both morphological characteristics and genetic loci. Populations of a common ancestor of the two species are thought to have diverged after becoming fragmented by severe aridity during the Pleistocene. These two species are now in secondary contact in the Carpentarian Basin, but occupy very different habitats and do not interbreed. The common name western gerygone ... [...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] |
The Clements Checklist Of Birds Of The World
''The Clements Checklist of Birds of the World'' is a book by Jim Clements which presents a list of the bird species of the world. The most recent printed version is the sixth edition (2007), but has been updated yearly, the last version in 2022, and is published by Cornell University Press. Previous editions were published by the author's own imprint, Ibis Publishing. The Cornell Lab of Ornithology has provided annual updates since then, usually in August, and the most recent version is available online in several formats. These updates reflect the ongoing changes to bird taxonomy based on published research. ''Clements'' is the official list used by the American Birding Association for birds globally. eBird eBird is an online database of bird observations providing scientists, researchers and amateur naturalists with real-time data about bird distribution and abundance. Originally restricted to sightings from the Western Hemisphere, the project ... also uses the ''Clem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interbreed
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Country
The Gulf Country is the region of woodland and savanna grassland surrounding the Gulf of Carpentaria in north western Queensland and eastern Northern Territory on the north coast of Australia. The region is also called the Gulf Savannah. It contains large reserves of zinc, lead and silver. The Gulf Country is crossed by the Savannah Way highway. Location and description The Gulf Country is a block of dry savanna between the wetter areas of Arnhem Land and the Top End of the Northern territory to the west and the Cape York Peninsula of Far North Queensland to the east, while to the south and east lie upland plains of Mitchell grasses and the Einasleigh Uplands. The Northern Territory side of the area is the Gulf Fall area of sandstone slopes and gorges draining the interior uplands into the gulf. The main land uses in the Gulf Country are beef cattle and mining. The region covers an area of . The landscape is generally flat and low-lying tropical savannah cut through with ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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