wilsons warbler
small, yellow-green songbird black forehead and lores yellow-green back with fine black streaks yellow chest and belly with a bold black necklace white or yellow undertail coverts long wings with white wing bars long, thin bill
wilsons warbler which has small, yellow-green songbird wilsons warbler which has black forehead and lores wilsons warbler which has yellow-green back with fine black streaks wilsons warbler which has yellow chest and belly with a bold black necklace wilsons warbler which has white or yellow undertail coverts wilsons warbler which has long wings with white wing bars wilsons warbler which has long, thin bill