yellow throated vireo
small, grey, brown and white songbird yellow throat and chest white eye ring white wing bars black crown blackish back and tail white undertail coverts dark bill and legs
yellow throated vireo which has small, grey, brown and white songbird yellow throated vireo which has yellow throat and chest yellow throated vireo which has white eye ring yellow throated vireo which has white wing bars yellow throated vireo which has black crown yellow throated vireo which has blackish back and tail yellow throated vireo which has white undertail coverts yellow throated vireo which has dark bill and legs