Blue-Winged Warbler

Look in shrubby, early-successional habitat such as overgrown fields and forest edges for a small yellow warbler gleaning insects from low foliage; its buzzy, two-parted song is often the first clue to its presence. It is most conspicuous during spring migration and the breeding season in eastern North America, when males sing persistently from exposed perches. Listening for the song is usually more productive than scanning, since the bird stays low and can be inconspicuous in dense cover.