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The blue waxbill (Uraeginthus angolensis), also called southern blue waxbill, blue-breasted waxbill, southern cordon-bleu, blue-cheeked cordon-bleu, blue-breasted cordon-bleu and Angola cordon-bleu, is a common species of estrildid finch found in Southern Africa. It is also relatively commonly kept as an aviary bird. [2]
[13] as well as range expansions of many other species of birds. [14] [15] [16] From 1966–2015 the eastern bluebird experienced a greater than 1.5% annual population increase throughout most of its breeding and year-round ranges, with exceptions including southern Florida and the Ohio River valley. [17]
The genus Sialia was introduced by the English naturalist William Swainson in 1827 with the eastern bluebird (Sialia sialis) as the type species. [2] [3] A molecular phylogenetic study using mitochondrial sequences published in 2005 found that Sialia, Myadestes (solitaires) and Neocossyphus (African ant-thrushes) formed a basal clade in the family Turdidae.
The true finches are small to medium-sized passerine birds in the family Fringillidae. Finches generally have stout conical bills adapted for eating seeds and nuts and often have colourful plumage. They occupy a great range of habitats where they are usually resident and do not migrate. They have a worldwide native distribution except for ...
Bird vocalization includes both bird calls and bird songs. In non-technical use, bird songs (often simply birdsong ) are the bird sounds that are melodious to the human ear. In ornithology and birding , songs (relatively complex vocalizations) are distinguished by function from calls (relatively simple vocalizations).
The blue finch or yellow-billed blue finch (Rhopospina caerulescens) is a species of small bird.Although it was long classified in the bunting family Emberizidae, [1] [2] or the cardinal family Cardinalidae, [3] more recent molecular studies have shown it fits comfortably in the Thraupini tribe within the family Thraupidae.
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Adult female in Livermore, California. The western bluebird is a small stocky bird with a length of 15 to 18 cm (5.9 to 7.1 in). The adult male is bright blue on top and on the throat with an orange breast and sides, a brownish patch on back, and a gray belly and undertail coverts.