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British finches are often associated with mules, a term used by cage bird breeders to refer to hybrids of finch species bred in captivity, such as that of a goldfinch and canary. There are now strict ringing regulations on British finches in places such as the UK , but they are still kept by aviculturists who care for them in much the same way ...
The family Fringillidae are the "true" finches. The International Ornithological Committee (IOC) recognizes these 239 species in the family, distributed among three subfamilies and 50 genera. Confusingly, only 79 of the species include "finch" in their common names, and several other families include species called finches.
The name Fringillidae for the finch family was introduced in 1819 by the English zoologist William Elford Leach in a guide to the contents of the British Museum. [3] [4] The taxonomy of the family, in particular the cardueline finches, has a long and complicated history.
The American goldfinch flies in a distinctive undulating pattern, creating a wave-shaped path. This normally consists of a series of wing beats to lift the bird, then folding in the wings and gliding in an arc before repeating the pattern. Birds often vocalize during the flapping phase of the pattern and then go silent during the coasting phase.
Finches are a form taxon composed of unrelated but similar-looking songbirds within the family Fringillidae of the superfamily Passeroidea. The family Fringillidae includes numerous birds not called "finches" in their common names, including the crossbills , siskins , and waxbills .
The European goldfinch originated in the late Miocene-Pliocene and belongs to the clade of cardueline finches. The citril finch and the Corsican finch are its sister taxa. Their closest relatives are the greenfinches, crossbills and redpolls. [12] The monophyly of the subfamily Carduelinae is suggested in previous studies. [13]
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The source for birds in the U.S. territories is the Avibase website: Bird checklists of the world (American Samoa), [6] Bird checklists of the world (Guam), [3] Bird checklists of the world (Northern Mariana Islands), [5] Bird checklists of the world (Puerto Rico), [4] Bird checklists of the world (United States Virgin Islands), [9] and Bird ...