In the southwestern U.S. mountains, the male Olive Warbler is recognizable by its copper-colored head, gray back, and white wing bars. It searches high in trees for insects and gives a soft whistled call.
The adult male has a copper-brown head with a black ear patch, gray back, and white wing bars. The young male's copper is replaced by yellow, and the female has a pale yellow face.
It forages high in pines and other trees, taking insects from twigs and from the bases of needle clusters. Outside the breeding season it is often seen in mixed flocks with other birds.
An extinction-risk assessment has not been added yet.