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Grayish baywing
The grayish baywing (''Agelaioides badius''), also known as the bay-winged cowbird, is a species of bird in the family Icteridae. It is currently placed in the genus ''Agelaioides'' but has traditionally been placed in the genus ''Molothrus''. It is found in the northern half of Argentina, Bolivia, Uruguay, Paraguay and southern and central Brazil, The isolated population in north-eastern Brazil is usually now considered a separate species, the pale cowbird or pale baywing (''Agelaioides fringillarius''). The greyish baywing has been recorded as a vagrant in Chile.
==Description and behavior==
It has a total length of approximately 18 cm (7 in). It is overall ashy-brown with contrasting black lores and rufous wings. The taxon ''fringillarius'' has more black in the face and is overall more rufescent (less ashy).
It is social and commonly seen in small groups. Unlike the "true" cowbirds in the genus ''Molothrus'', this species is not a brood parasite. In contrast, the screaming cowbird is a brood parasite of the bay-winged cowbird, and while adult screaming cowbirds are overall blackish, juvenile screaming cowbirds closely resemble bay-winged cowbirds.
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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