Any of various birds of the order Galliformes, especially the common, widely domesticated chicken ( Gallus gallus ).

鸟禽类鸡形目里任何一种鸟, 尤指普通的 、 广泛家养的小鸡 ( 原鸡 )

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Peacocks are classified in the phylum Chordata, subphylum Vertebrata , class Aves , order Galliformes, family Phasianidae.

孔雀被认为是脊索动物类,脊索动物亚门, 鸟类.

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