Habitat: The Blue-winged Warbler will favor woodland and forest borders habitats in the lowlands and foothills. Distribution: This species is migratory. It breeds in eastern United States and winters south from southern Mexico to Nicaragua and a small numbers go to Costa Rica and Panama. Natural History Notes: An interesting fact is that this species forms two distinctive hybrids with the Golden-winged Warbler species. The commoner and genetically dominant hybrid is called Brewster's Warble and the rarer, referred to as the recessive, is the Lawrence's Warbler. Conservation status according to IUCN 2008 Red list: Least Concern (LC). It is a latitudinal migratory species. Characteristics: The total length of this species varies between 11.4 cm and 12.7 cm (measured from tip of bill to end of tail). This bird has a short, pointed black bill. The male has a plumage bright yellow on the crown, the face and the underparts, with a black line passing through the eye. Then, the hindneck and the back are olive green and the wings are blue-gray with two large white bars on the wings. The female looks similar but the overall plumage is duller and with a whitish under tail-coverts.