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 ...

“The warbler lost almost a third of its habitat ... It then migrates south for the winter to the pine-oak forests in the highlands of southern Mexico and Central America. The species was listed ...