Secretive, found in montane thickets and scrub, typically in or near forests. Usually solitary and rarely found in mixed feeding flocks. Soft gray of body and head contrast sharply with olive-green back and wings. It is similar to White-winged Warbler, but is gray rather than white below, has red eyes, and lacks white on the tail and wings. Song is a series of loud, sharp “tsip” notes. Calls include loud squeaky notes and raspy scolds.