Unlike other vireos, but compare with pine warbler, with which it is confused, particularly in winter. Pine warbler has a greenish yellow rump, streaked sides, thinner bill, and less complete and ...

In the East, they may form mixed flocks with brownish yellow pine warblers ... Attract a prothonotary warbler with a ...

Last year’s winter brought surprises with a record high count of Pine Warblers, a species that typically winters farther south ... Some rare surprises included the first-ever Yellow-throated Warbler ...