The Blackburnian Warbler breeds throughout the eastern United States and southern Canada. Boreal areas through central and eastern Canada, from north-eastern British Columbia east to Newfoundland and Labrador, make up its northern range.
Risks to the Species
Its population has been rising with forest regeneration after massive 19th century deforestation. Regional declines have occurred where forest fragmentation has again predominated. There is also evidence that pesticide usage has a negative effect on the Warbler populations.
The Blackburnian Warbler is entirely black in all plumages, except for a creamy wash on the face and flanks of many females. The head has a white median crown stripe bordered by black, the only warbler to exhibit this pattern. A bold white border to the tertials is distinctive, as are the black upper tail coverts with white fringes
