Plumbeous black-tyrant Knipolegus cabanisi

Medium-sized flycatcher of Andean slopes; rare in southern Peru, more common in Bolivia and northern Argentina. Male is separated from White-winged Black-Tyrant by grayer, less glossy plumage and from Cinereous Tyrant by darker belly. Female is told from those species by her dark (not pale) throat. Inhabits humid forest, often near rivers and streams. Perches on a bare branch or snag and sallies out after insects.