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Geospiza
''Geospiza'' is a genus of bird in the tanager family Thraupidae. All species in the genus are endemic to the Galápagos Islands. Together with related genera, they are collectively known as Darwin's finches. Although in the past, they were classified in the bunting and American sparrow family Emberizidae, more recent studies have shown they belong in the tanager family. Taxonomy and species list The genus ''Geospiza'' was introduced in 1837 by the English ornithologist John Gould with the large ground finch as the type species. The genus name derives from the two Ancient Greek words (), meaning "earth", and (), a catch-all term for ''finch''-like birds. The member of the genus form part of a group collectively known as Darwin's finches. Although traditionally placed with the buntings and New World sparrows in the family Emberizidae, molecular phylogenetic studies have shown that Darwin's finches are members of the subfamily Coerebinae within the tanager family Thraupidae. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darwin's Finches
Darwin's finches (also known as the Galápagos finches) are a group of about 18 species of passerine birds. They are well known for being a classic example of adaptive radiation and for their remarkable diversity in beak form and function. They are often classified as the subfamily Geospizinae or tribe (biology), tribe Geospizini. They belong to the Thraupidae, tanager Family (biology), family and are not closely related to the true finches. The closest known relative of the Galápagos finches is the South American dull-coloured grassquit (''Asemospiza obscura''). They were first collected when Second voyage of HMS Beagle, the second voyage of the ''Beagle'' visited the Galápagos Islands, with Charles Darwin on board as a gentleman naturalist. Apart from the Cocos finch, which is from Cocos Island, the others are found only on the Galápagos Islands. The term "Darwin's finches" was first applied by Percy Lowe in 1936, and popularised in 1947 by David Lack in his book ''Darwin' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geospiza Conirostris -Espanola, Galapagos, Ecuador-29Sept2010
''Geospiza'' is a genus of bird in the tanager family Thraupidae. All species in the genus are endemic to the Galápagos Islands. Together with related genera, they are collectively known as Darwin's finches. Although in the past, they were classified in the bunting and American sparrow family Emberizidae, more recent studies have shown they belong in the tanager family. Taxonomy and species list The genus ''Geospiza'' was introduced in 1837 by the English ornithologist John Gould with the large ground finch as the type species. The genus name derives from the two Ancient Greek words (), meaning "earth", and (), a catch-all term for ''finch''-like birds. The member of the genus form part of a group collectively known as Darwin's finches. Although traditionally placed with the buntings and New World sparrows in the family Emberizidae, molecular phylogenetic studies have shown that Darwin's finches are members of the subfamily Coerebinae within the tanager family Thraupidae. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanager
The tanagers (singular ) comprise the bird family (biology), 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 (bird), Habia'' appear to be members of the family Cardinalidae, and have been reassigned to that family by the American Ornithological Society. Description T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vampire Finch (4229090408)
The vampire ground finch (''Geospiza septentrionalis'') is a small bird native to the Galápagos Islands. Endemic to Wolf and Darwin Island, it was previously considered a very distinct subspecies of the sharp-beaked ground finch (''Geospiza difficilis''),Grant, Peter R.; Grant, B. Rosemary & Petren, Kenneth (2000). The allopatric phase of speciation: the sharp-beaked ground finch (''Geospiza difficilis'') on the Galápagos islands. '' Biol. J. Linn. Soc.'' 69(3): 287–317. but the International Ornithologists' Union has split the species based on strong genetic evidence that they are not closely related, and divergences in morphology and song. Description The vampire finch is sexually dimorphic as typical for its genus, with the males being primarily black and the females grey with brown streaks. It has a lilting song on Wolf, a buzzing song on Darwin, and whistling calls on both islands; only on Wolf, a drawn-out, buzzing call is also uttered. Ecology This bird is most fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genovesa Ground Finch (Geospiza Acutirostris), Female
The Genovesa ground finch (''Geospiza acutirostris'') is a small bird native to the Galápagos Islands. It was considered a subspecies of the sharp-beaked ground finch (''Geospiza difficilis'') endemic to Genovesa Island.Grant, Peter R.; Grant, B. Rosemary & Petren, Kenneth (2000). The allopatric phase of speciation: the sharp-beaked ground finch (''Geospiza difficilis'') on the Galápagos islands. '' Biol. J. Linn. Soc.'' 69(3): 287–317. Rothschild, W. and E. Hartert. (1899). A Review of the Ornithology of the Galapagos Islands. With Notes on the Webster-Harris Expedition. ''Novitates Zoologicae'' Vol. VI, No. 2, pp. 85-205, 2 plates. The International Ornithologists' Union has split the species. Other taxonomic authorities still consider it conspecific Biological specificity is the tendency of a characteristic such as a behavior or a biochemical variation to occur in a particular species. Biochemist Linus Pauling stated that "Biological specificity is the set of characteris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Española Cactus Finch
The Española cactus finch (''Geospiza conirostris''), is a species of bird in the tanager family Thraupidae. It is one of Darwin's finches, and is endemic to the Galápagos islands, where it is restricted to Española, Genovesa, and the Darwin and Wolf Islands. This rather dark bird resembles the smaller and finer-beaked common cactus finch, but the two species do not co-inhabit any island. Its natural habitat is dry shrubland and it is commonly seen on the ground. Its main food source is the cactus ''Opuntia''. Taxonomy The Española cactus finch is one of Darwin's finches, a group of closely related birds that evolved on the Galápagos Islands. The group is related to the '' Tiaris'' grassquits, which are found in South America and the Caribbean. An ancestral relative of those grassquits arrived on the Galápagos Islands some 2–3 million years ago, and the Española cactus finch is one of the species that evolved from that ancestor.Grant & Grant (2008), p. 25. From a st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sharp-beaked Ground Finch (f) JCB
The sharp-beaked ground finch (''Geospiza difficilis'') is a species of bird in the Darwin's finch group of the tanager family Thraupidae. It is classified as a least-concern species by the International Union for Conservation of Nature and it is native to the Galápagos Islands in Ecuador. It has a mass of around and the males have black plumage, while females have streaked brown plumage. This finch was described by Richard Bowdler Sharpe in 1888. This relatively small, slender-billed finch is endemic to the Galápagos Islands, where it is found on Fernandina, Santiago, Pinta, Genovesa, Darwin, and Wolf Islands. On the first three islands, it breeds in the humid highlands and disperses afterwards, but on the remaining smaller and lower islands the sharp-beaked ground finch is found in the arid zone year-round. Due to habitat destruction its range has decreased. It was formerly also present in the highlands of several other islands, and it is possible it still occurs on I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Large Ground Finch
The large ground finch (''Geospiza magnirostris'') is a species of bird in the genus Geospiza. One of Darwin's finches, it is now placed in the tanager family Thraupidae and was formerly in the Emberizidae. It is the largest species of Darwin's finch. Description The large ground finch weighs about 27-39 g, and its length ranges slightly 15-16 cm. It is the largest species of Darwin's finch both in total size and size of beak. The feather and bill colors vary between males and females. The adult male is mostly black, with slightly browner wings and tail; the cloaca is white-streaked; the eyes are dark brown. It also has blackish legs. The tail is relatively short. An adult female has browner feathers compared to a male, sometimes with yellow-brown or grey outer edges; scaled patterns are found going up the body; most parts of the torso and the head are streaked with brown and pale yellow shades. Beak It has a large beak, having a thick base of lower mandibles and curved cul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sharp-beaked Ground Finch
The sharp-beaked ground finch (''Geospiza difficilis'') is a species of bird in the Darwin's finch group of the tanager family Thraupidae. It is classified as a least-concern species by the International Union for Conservation of Nature and it is native to the Galápagos Islands in Ecuador. It has a mass of around and the males have black plumage, while females have streaked brown plumage. This finch was described by Richard Bowdler Sharpe in 1888. This relatively small, slender-billed finch is endemic to the Galápagos Islands, where it is found on Fernandina, Santiago, Pinta, Genovesa, Darwin, and Wolf Islands. On the first three islands, it breeds in the humid highlands and disperses afterwards, but on the remaining smaller and lower islands the sharp-beaked ground finch is found in the arid zone year-round. Due to habitat destruction its range has decreased. It was formerly also present in the highlands of several other islands, and it is possible it still occurs on I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
