Olivaceous Greenlet Hylophilus olivaceus

A small, vociferous vireo of east Andean cloud forest. Yellow underparts and crown, pale eye, and pinkish bill help separate it from other species in range. Usually stays high in the trees and sometimes follows mixed-species flocks. Sings frequently, belting out a squeaky and sometimes monotonous series of notes such as “twee-twee-twee…” or “soowe-soowe-soowe …”