Blue-winged Warbler (Vermivora cyanoptera, formerly Vermivora pinus). A bird of shrubland and old fields, the Blue-winged Warbler expanded its breeding grounds northward throughout the 20th century.
Description: Blue-winged Warbler (Vermivora cyanoptera, formerly Vermivora pinus). A bird of shrubland and old fields, the Blue-winged Warbler expanded its breeding grounds northward throughout the 20th century.
