Warbling Vireo

Often confused with Philadelphia Vireo; note Warbling shows brightest color on sides (not throat) and fainter dark eyeline (especially indistinct in front of the eye). Warbling is also longer-tailed and has a slightly longer, thinner bill than Philadelphia. Scratchy warbling song is heard from treetops, particularly in riparian areas and cottonwoods. Migrants and wintering birds can be found in any wooded habitat.