Range / Habitat: Breeds in open woodlands of northern US and most of Canada. Winters along wooded ravines, woodland edge, and brush land on both coasts of Mexico, including the Yucatan.
Field Notes: Small flycatcher with grey to olive back, darker wings with two white wingbars. Underparts white and prominent eyering. Difficult to distinguish among other members of genus with call being the best determining characteristic. That having been said, Least Flycatcher is the smallest and most grey of the Empidonax.
Personal Notes: So small we initially mistook him for a warbler.