There is one species of bird in this family. The olive warbler (Peucedramus taeniatus) breeds in the mountain forests of southwest and west central New Mexico. It is about 4.5 inches in length and has a thin, pointed bill and long, thin legs. The male has a rusty orange head, neck, and chest and a black mask over its eyes. Females have a yellowish-gray crown on their heads and on the nape of their necks. The olive warbler is gray on its uppersides and a lighter gray on its undersides. It has dark wings with white bars and a dark tail.