May 20, 2017 – Blue-winged Warbler (Vermivora cyanoptera)
Breeding in the northeastern United States, these warblers migrate through the southeastern US and eastern Mexico to the Caribbean and eastern Central America. They eat insects and spiders, foraging in trees and shrubs, often while hanging upside down. Females build open cup-shaped nests from grasses, bark, and dry leaves, on or near the ground and do most of the incubation, while males occasionally bring them food. Males bring most of the food for the first few days of the chicks’ lives, then both parents feed them. They often interbreed with the Golden-winged Warbler, resulting in two intermediate-plumaged hybrids, known as Brewster’s Warbler and Lawrence’s Warbler.