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Wrentit
The wrentit (''Chamaea fasciata'') is a small bird that lives in chaparral, California oak woodland, oak woodlands, and bushland on the western coast of North America. It is the Monotypic taxon, only species in the genus ''Chamaea''. Its systematics have been the subject of much debate, the wrentit having been placed in many different family (biology), families by different authors for as long as it has been known to science. Its common name reflects the uncertainty, and its external resemblance to both Paridae, tits and wrens. It is not related to either, however. More recent and comprehensive phylogenetic studies support it belonging to the parrotbills. Description The wrentit is a small, bird with uniform dull olive, brown, or grayish plumage. It has short wings and a long tail often held high (hence the comparison to wrens). It has a short beak, bill and a pale iris. Given its retiring nature and loud voice, the wrentit is more likely to be detected by its call than by sigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaparral
Chaparral ( ) is a shrubland plant plant community, community found primarily in California, southern Oregon, and northern Baja California. It is shaped by a Mediterranean climate (mild wet winters and hot dry summers) and infrequent, high-intensity crown fires. Many chaparral shrubs have hard sclerophyllous evergreen leaves, as contrasted with the associated soft-leaved, drought-deciduous, scrub community of coastal sage scrub, found often on drier, southern-facing slopes. Three other closely related chaparral shrubland systems occur in southern Arizona, western Texas, and along the eastern side of central Mexico's mountain chains, all having summer rains in contrast to the Mediterranean climate of other chaparral formations. Etymology The name comes from the Spanish language, Spanish word , which translates to "place of the scrub oak". ''Scrub oak'' in turn comes from the Basque language, Basque word , which has the same meaning. Overview In its natural state, chaparral is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parrotbill
The parrotbills are a family, Paradoxornithidae, of passerine birds that are primarily native to East, Southeast and South Asia, with a single species in western North America, though feral populations exist elsewhere. They are generally small birds that inhabit reedbeds, forests and similar habitats. The traditional parrotbills feed mainly on seeds, e.g. of grasses, to which their robust bill, as the name implies, is well- adapted. Members of the family are usually non- migratory. The bearded reedling or "bearded tit", a Eurasian species formerly placed here, is more insectivorous by comparison, especially in summer. It also strikingly differs in morphology, such as its finer bill, and has again been moved to the monotypic family Panuridae. Conversely, a number of other mostly insectivorous species that traditionally were placed in Timaliidae (Old World babblers), for example the fulvettas and fire-tailed myzornis, along with the wrentit (a species with a conflicting taxono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Gambel
William Gambel (June 1823 – December 13, 1849) was an American naturalist, ornithologist, and botanist from Philadelphia. As a young man he worked closely with the renowned naturalist Thomas Nuttall. At the age of eighteen he traveled overland to California, becoming the first botanist to collect specimens in Santa Fe, New Mexico, and parts of California. Biography Gambel was born William Gamble Jr. in Philadelphia in June 1823. His father, William Gamble Sr., had immigrated from Northern Ireland and served in the War of 1812. After the death of his first wife, Gamble Sr. moved to Philadelphia, where he married Elizabeth Gamble in August 1822. They had three children: William and two daughters. Gamble Sr. died of pneumonia in 1832, and Elizabeth Gamble was left to raise the children on her own. William proved to be a good student, perhaps influenced by his mother, who worked as a school teacher. For unexplained reasons, he began spelling his surname Gambel. In 1838 Gambel met t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sylvia (bird)
The typical warblers are small birds belonging to the genus ''Sylvia'' in the "Old World warbler" (or sylviid warbler) family (biology), family Sylviidae.Del Hoyo, J.; Elliot, A., & Christie, D. (editors). (2006). ''Handbook of the Birds of the World''. Volume 11: Old World Flycatchers to Old World Warblers. Lynx Edicions. . There are seven species in the genus.Helbig, A. J. (2001). The characteristics of the genus: Phylogeny and biogeography of the genus ''Sylvia''. Pages 24–28 in: Shirihai, H., Gargallo, G., Helbig, A. J., & Harris, A. ''Sylvia Warblers''. Helm Identification Guides Jønsson, K. A. & Fjeldså, J. (2006). A phylogenetic supertree of oscine passerine birds (Aves: Passeri). ''Zoologica Scripta, Zool. Scripta'' 35 (2): 149–186. (HTML abstract) Typical warblers occur in the temperate to tropical regions of Europe, western and central Asia, and Africa, with the highest species diversity centred on the Mediterranean. They are strongly built, with stouter legs a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNA–DNA Hybridization
In genomics, DNA–DNA hybridization is a molecular biology technique that measures the degree of genetic similarity between DNA sequences. It is used to determine the genetic distance between two organisms and has been used extensively in phylogeny and taxonomy. Method The DNA of one organism is labelled, then mixed with the unlabelled DNA to be compared against. The mixture is incubated to allow DNA strands to dissociate and then cooled to form renewed hybrid double-stranded DNA. Hybridized sequences with a high degree of similarity will bind more firmly, and require more energy to separate them. An example is they separate when heated at a higher temperature than dissimilar sequences, a process known as " DNA melting". To assess the melting profile of the hybridized DNA, the double-stranded DNA is bound to a column or filter and the mixture is heated in small steps. At each step, the column or filter is washed; then sequences that melt become single-stranded and wash off. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenetic
In biology, phenetics (; ), also known as taximetrics, is an attempt to classify organisms based on overall similarity, usually with respect to Morphology (biology), morphology or other observable traits, regardless of their phylogeny or evolutionary relation. It is related closely to numerical taxonomy which is concerned with the use of numerical methods for taxonomic classification. Many people contributed to the development of phenetics, but the most influential were Peter Sneath and Robert R. Sokal. Their books are still primary references for this sub-discipline, although now out of print. Phenetics has been largely superseded by cladistics for research into evolutionary relationships among species. However, certain phenetic methods, such as neighbor-joining, are used for phylogenetics, as a reasonable approximation of phylogeny when more advanced methods (such as Bayesian inference) are too expensive computationally. Phenetic techniques include various forms of Cluster ana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNA Sequence
A nucleic acid sequence is a succession of bases within the nucleotides forming alleles within a DNA (using GACT) or RNA (GACU) molecule. This succession is denoted by a series of a set of five different letters that indicate the order of the nucleotides. By convention, sequences are usually presented from the 5' end to the 3' end. For DNA, with its double helix, there are two possible directions for the notated sequence; of these two, the sense strand is used. Because nucleic acids are normally linear (unbranched) polymers, specifying the sequence is equivalent to defining the covalent structure of the entire molecule. For this reason, the nucleic acid sequence is also termed the primary structure. The sequence represents genetic information. Biological deoxyribonucleic acid represents the information which directs the functions of an organism. Nucleic acids also have a secondary structure and tertiary structure. Primary structure is sometimes mistakenly referred to as "prim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologica Scripta
''Zoologica Scripta'' is a bimonthly peer-reviewed scientific journal on systematic zoology, published by Wiley-Blackwell on behalf of the Norwegian Academy of Science and Letters and the Royal Swedish Academy of Sciences. It was established in 1972. The editor-in-chief since 2023 is Lutz Bachmann ( Natural History Museum at the University of Oslo). According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... of 3.140, ranking it 12th out of 174 journals in the category "Zoology". See also * '' Arkiv för Zoologi'' References External links * * Zoology journals Royal Swedish Academy of Sciences Academic journals established in 1972 Bimonthly journals Wiley-Blackwell academic journals Academi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auk (journal)
''Ornithology'', formerly ''The Auk'' and ''The Auk: Ornithological Advances'', is a peer-reviewed scientific journal and the official publication of the American Ornithological Society (AOS). It was established in 1884 and is published quarterly. The journal covers the anatomy, behavior, and distribution of birds. It was named for the great auk, the symbol of the AOS. In 2018, the American Ornithology Society announced a partnership with Oxford University Press Oxford University Press (OUP) is the publishing house of the University of Oxford. It is the largest university press in the world. Its first book was printed in Oxford in 1478, with the Press officially granted the legal right to print books ... to publish ''The Auk: Ornithological Advances'' and '' The Condor: Ornithological Applications''. In January 2021, the journal was renamed ''Ornithology'', with the stated goal of improving descriptiveness, thematic focus, and ease of citation of the journal title. The soc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Ornithologists' Union
The American Ornithological Society (AOS) is an ornithological organization based in the United States. The society was formed in October 2016 by the merger of the American Ornithologists' Union (AOU) and the Cooper Ornithological Society. Its members are primarily professional ornithologists, although membership is open to anyone with an interest in birds. The society publishes the two scholarly journals, Ornithology' (formerly '' The Auk)'' and Ornithological Applications' (formerly '' The Condor)'' as well as the '' AOS Checklist of North American Birds''. The American Ornithological Society claims the authority to establish standardized English bird names throughout North and South Americas. In 2013, the American Ornithologists' Union (AOU) announced a collaboration with the Cooper Ornithological Society, streamlining operations through joint meetings, a shared publishing office, and a reorientation of their journals. By October 2016, the AOU ceased its independent status, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dartford Warbler
The Dartford warbler (''Curruca undata'') is a typical warbler from the warmer parts of western Europe and northwestern Africa. It is a small warbler with a long thin tail and a thin pointed bill. The adult male has grey-brown upperparts and is dull reddish-brown below except for the centre of the belly which has a dirty white patch. It has light speckles on the throat and a red eye-ring. The sexes are similar but the adult female is usually less grey above and paler below. Its breeding range lies west of a line from southern England to the heel of Italy (southern Apulia). The Dartford warbler is usually resident all year in its breeding range, but there is some limited bird migration, migration. Taxonomy and systematics The Dartford warbler was first described in 1776 by the Welsh naturalist, Thomas Pennant. He introduced the English name and based his description on two specimens that had been obtained by the ornithologist John Latham (ornithologist), John Latham from Bexley He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
