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Blue-fronted amazon
The blue-fronted amazon (''Amazona aestiva''), also called the turquoise-fronted amazon and blue-fronted parrot, is a South American species of amazon parrot and one of the most common amazon parrots kept in captivity as a pet or companion parrot. Its common name is derived from the distinctive blue marking on its head just above its beak.
==Description==
The blue-fronted amazon is a mainly green parrot about long. They have blue feathers on the forehead above the beak and yellow on the face and crown. Distribution of blue and yellow varies greatly among individuals. Unlike most other ''Amazona'' parrots, its beak is mostly black. There is no overt sexual dimorphism to the human eye, but analysis of the feathers using spectrometry, a method which allows the plumage to be seen as it would be by a parrot's tetrachromatic vision, shows clear differences between the plumage of the sexes. Juveniles of parrots are duller and have dark irises.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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