Location in Oregon
Blue is Winter range - Red is Summer range
Purple is Year-round range - Yellow is Migration range

Nashville Warbler

Vermivora ruficapilla - Common in open second-growth deciduous woods and spruce bogs. Only North American warbler with the combination of bluish-gray head, white-eye ring, bright yellow throat; and no wing bars. Reddish cap of male is often concealed. Song is in two parts; first half suggests Black-and-white Warbler, but notes are separate; the rest is a lower-pitched, slow trill, 4-6/min.