Tiny gray and white bird with cocked tail. Fairly common in humid tropical forest canopy, often traveling with mixed-species flocks. Both sexes have a thick white eyebrow and ‘open’ face, unlike the narrow white eyebrow of White-lored Gnatcatcher. Male cap is black, female cap gray. Only other gnatcatcher likely to occur in the same areas is Blue-gray, which has a very different face pattern, with its white eyering.