Blackburnian warbler
The Blackburnian warbler (Setophaga fusca [formerly Dendroica fusca]) is a small New World warbler. They breed in eastern North America, from southern Canada, westwards to the southern Canadian Prairies, the Great Lakes region and New England, to North Carolina. Blackburnian warblers are migratory, wintering in southern Central America and in South America, and are very rare vagrants to western Europe.
Taken from: Wikipedia.