Size: L: 15 cm. Wt: 11-12 g. Males and females are similar.

Adult/Juvenile: short-tailed and large-headed compared to other Empidonax species; upperparts brownish-olive; broad yellow eye-ring; two buffy or whitish wing-bars; underparts with broad olive 'vest' (more extensive than in Acadian Flycatcher, and with no pale area between vest and yellow belly); throat yellowish; bill with black upper mandible, yellow lower mandible; legs black

Nestling: altricial and downy; skin pinkish; down brownish-olive