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Poecilostreptus
''Poecilostreptus'' is a genus of birds in the tanager family Thraupidae. Taxonomy and species list These species were formerly placed in the genus '' Tangara''. A molecular phylogenetic study published in 2014 found that ''Tangara'' was polyphyletic. In the rearrangement to create monophyletic genera, the new genus, ''Poecilostreptus'', was erected with the grey-and-gold tanager as the type species. The genus name combines the Ancient Greek ποικίλος/''poikílo'' meaning "spotted" or "dappled" and στρεπτός/''streptós'' meaning "collar". The genus contains the two species: * Azure-rumped tanager, ''Poecilostreptus cabanisi'' * Grey-and-gold tanager The grey-and-gold tanager (''Poecilostreptus palmeri'') is a species of bird in the family Thraupidae. It is found in Colombia, Ecuador, and Panama (Serranía del Darién and western Andean slope of Colombia and Ecuador). Its natural habitats ar ..., ''Poecilostreptus palmeri'' References Poecilostreptus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poecilostreptus
''Poecilostreptus'' is a genus of birds in the tanager family Thraupidae. Taxonomy and species list These species were formerly placed in the genus '' Tangara''. A molecular phylogenetic study published in 2014 found that ''Tangara'' was polyphyletic. In the rearrangement to create monophyletic genera, the new genus, ''Poecilostreptus'', was erected with the grey-and-gold tanager as the type species. The genus name combines the Ancient Greek ποικίλος/''poikílo'' meaning "spotted" or "dappled" and στρεπτός/''streptós'' meaning "collar". The genus contains the two species: * Azure-rumped tanager, ''Poecilostreptus cabanisi'' * Grey-and-gold tanager The grey-and-gold tanager (''Poecilostreptus palmeri'') is a species of bird in the family Thraupidae. It is found in Colombia, Ecuador, and Panama (Serranía del Darién and western Andean slope of Colombia and Ecuador). Its natural habitats ar ..., ''Poecilostreptus palmeri'' References Poecilostreptus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azure-rumped Tanager
The azure-rumped tanager or Cabanis's tanager (''Poecilostreptus cabanisi'') is a species of bird in the family Thraupidae. It is a local resident in humid broadleaf forests and adjacent plantations of the Pacific slope of western Guatemala and southern Chiapas, Mexico. It has been reported at elevations of . Description Its plumage is mostly pale blue, with a purplish-blue crown, distinctive dark spots across the chest, dark lores and lower auriculars. The mantle is mottled greenish-blue and black. The wings and tail are black with blue edgings. The bill is gray with a dark tip. Cabanis's tanagers utter several sibilant vocalizations, hard trill and twitters. The azure-rumped tanager is omnivorous, feeding on fruit and arthropods. In Guatemala, abundance was positively correlated with the density of ''Ficus aurea'' trees. Figs of that tree are a main food source. The nesting season ranges from April to September, during which azure-rumped tanagers move in pairs or family groups ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grey-and-gold Tanager
The grey-and-gold tanager (''Poecilostreptus palmeri'') is a species of bird in the family Thraupidae. It is found in Colombia, Ecuador, and Panama (Serranía del Darién and western Andean slope of Colombia and Ecuador). Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forest Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial ...s. Gallery File:CalospizaPalmeriGronvold.jpg, left, Grey-and-gold tanager by Henrik Gronvold, 1910 File:Grey-and-gold Tanager.jpg, Grey-and-gold tanager References grey-and-gold tanager Birds of the Colombian Andes grey-and-gold tanager Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN {{Thraupidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grey-and-gold Tanager
The grey-and-gold tanager (''Poecilostreptus palmeri'') is a species of bird in the family Thraupidae. It is found in Colombia, Ecuador, and Panama (Serranía del Darién and western Andean slope of Colombia and Ecuador). Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forest Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial ...s. Gallery File:CalospizaPalmeriGronvold.jpg, left, Grey-and-gold tanager by Henrik Gronvold, 1910 File:Grey-and-gold Tanager.jpg, Grey-and-gold tanager References grey-and-gold tanager Birds of the Colombian Andes grey-and-gold tanager Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN {{Thraupidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thraupidae
The tanagers (singular ) comprise the bird family Thraupidae, in the order Passeriformes. The family has a Neotropical distribution and is the second-largest family of birds. It represents about 4% of all avian species and 12% of the Neotropical birds. Traditionally, the family contained around 240 species of mostly brightly colored fruit-eating birds. As more of these birds were studied using modern molecular techniques, it became apparent that the traditional families were not monophyletic. ''Euphonia'' and ''Chlorophonia'', which were once considered part of the tanager family, are now treated as members of the Fringillidae, in their own subfamily (Euphoniinae). Likewise, the genera ''Piranga'' (which includes the scarlet tanager, summer tanager, and western tanager), '' Chlorothraupis'', and '' Habia'' appear to be members of the cardinal family, and have been reassigned to that family by the American Ornithological Society. Description Tanagers are small to medium-sized b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tangara (genus)
''Tangara '' is a large genus of birds of the tanager family. It includes 27 species. All are from the Neotropics, and while most are fairly widespread, some have small distributions and are threatened. They are fairly small, ranging in size from . This genus includes some of the most spectacularly colored birds of the world. Taxonomy and species list The genus ''Tangara'' was introduced by the French zoologist Mathurin Jacques Brisson in 1760 with the paradise tanager (''Tangara chilensis'') as the type species. The name means "dancer" in the extinct Tupi language. The genus formerly included additional species. A molecular phylogenetic study published in 2014 found that many of the members of ''Thraupis'' was embedded within ''Tangara''. In the reorganization to create monophyletic genera, rather than merging ''Thraupis'' into ''Tangara'' to create an unusually large genus with around 58 species, taxonomists chose to split off species from ''Tangara'' into four other genera. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Eduard Hellmayr
Carl Eduard Hellmayr (29 January 1878 in Vienna, Austria – 24 February 1944 in Orselina, Switzerland) was an Austrian ornithologist. Biography Hellmayr was born in Vienna and studied at the University of Vienna, although he did not complete his degree. After his studies he worked in Vienna, Munich, Berlin, Paris, Tring (England), and Chicago. He spent the years 1905–1908 studying Baron Rothschild's private collection of natural history specimens at Tring, near London. There he received guidance from the German ornithologist Ernst Hartert. In 1908, Hellmayr was appointed Curator of the Bird Department at the Bavarian State Museum, which he had helped organize in 1903 and where he became a specialist in Neotropical birds, studying Johann Baptist von Spix's collection of Brazilian birds. In 1922, he was made Curator in Zoology at the Field Museum in Chicago. He stayed there until 1931. His books included 13 of the 15 volumes of the ''Catalogue of Birds of the Americas'' (19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical framew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphyletic
A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of convergent evolution. The arrangement of the members of a polyphyletic group is called a polyphyly .. ource for pronunciation./ref> It is contrasted with monophyly and paraphyly. For example, the biological characteristic of warm-bloodedness evolved separately in the ancestors of mammals and the ancestors of birds; "warm-blooded animals" is therefore a polyphyletic grouping. Other examples of polyphyletic groups are algae, C4 photosynthetic plants, and edentates. Many taxonomists aim to avoid homoplasies in grouping taxa together, with a goal to identify and eliminate groups that are found to be polyphyletic. This is often the stimulus for major revisions of the classification schemes. Researchers concerned more with ecology than with systema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyletic
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic groups are typically characterised by shared derived characteristics ( synapomorphies), which distinguish organisms in the clade from other organisms. An equivalent term is holophyly. The word "mono-phyly" means "one-tribe" in Greek. Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic group'' consists of all of the descendants of a common ancestor minus one or more monophyletic groups. A '' polyphyletic group'' is characterized by convergent features or habits of scientific interest (for example, night-active primates, fruit trees, aquatic insects). The features by which a polyphyletic group is differentiated from others are not inherited from a common ancestor. These definitions have tak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Species
In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen(s). Article 67.1 A similar concept is used for suprageneric groups and called a type genus. In botanical nomenclature, these terms have no formal standing under the code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen (or, rarely, an illustration) which is also the type of a species name. The species name that has that type can also be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, and some higher-rank names based on genus names, have such types. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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