Marañon Gnatcatcher Polioptila maior

Tiny gray-and-white bird with long cocked tail and rather long slender bill. Fairly common in dry and semi-dry forest in the Marañón Valley; recently also discovered in dry valleys as far south as northern Lima. Often in pairs, traveling with mixed-species flocks. Male has a solid black cap, female has a bold white eyebrow. Generally the only gnatcatcher in range, but compared to White-browed Gnatcatcher, note the white forehead in female Marañon, and lack of white eyebrow in the male.