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Long-tailed finch : ウィキペディア英語版 | Long-tailed finch
The long-tailed finch (''Poephila acuticauda'') is a common species of estrildid finch found in Australia; also known as the Blackheart Finch, shaft-tail finch, Heck's grassfinch, Heck's grass finch, and Heck's finch. It is a predominantly fawn-coloured bird with a pale grey head and prominent black bib and eyes. It has an estimated global extent of occurrence of 1,000,000–10,000,000 km2. It inhabits dry savannah habitats in Australia and adapts readily to aviculture. The IUCN has classified the species as being of least concern. ==Taxonomy== The long-tailed finch was first described by ornithologist John Gould in 1840 as ''Amadina acuticauda'', having been collected by Benjamin Bynoe, the surgeon aboard HMS ''Beagle''. It is one of three species in the genus ''Poephila''. It is placed in the Australo-papuan finch family Estrildidae, although this family itself was previously placed in the sparrow family Passeridae. A genetic study published in 2005 showed that the two subspecies of the long-tailed finch were separated from each other by the Kimberley Plateau–Arnhem Land Barrier around 340,000 years ago, and their ancestors diverged from the black-throated finch (''P. cincta'') across the Carpentarian Barrier 600 thousand years ago.
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