Chestnut-sided Warbler

I banded this Chestnut-sided Warbler this spring in Northfield. In Audubon’s time, this species was hardly ever encountered (Byers et al. 2013). An inhabitant of forest edges and secondary growth, this warbler benefited from humans’clear-cutting the continent’s old growth forests. Now it can be the most abundant breeding warbler in early succession woodlands.