Large, stout-billed flycatcher restricted to arid areas and oases of northwestern Peru and western Ecuador. Distinctive in range, with yellow belly, chestnut wings and tail, and black mask. It does not occur together with the similar Golden-crowned Flycatcher, which is a cloud forest species. Typically sits high up on a tree, pole, wire, or other elevated perch. Sallies out to catch insects, and also regularly eats fruit.