
Cardellina pusilla
John James Audubon, Birds of America (1827-1838). Public domain.
Showing primary migration corridor(s) for this species
Wilson's warbler (Cardellina pusilla) is a small New World warbler. It is greenish above and yellow below, with rounded wings and a long, slim tail. The male has a black crown patch; depending on the subspecies, that mark is reduced or absent in the female. It breeds across Canada and south through the western United States, and winters from Mexico south through much of Central America. It is a very rare vagrant to western Europe.
Source: Wikipedia
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