Large vireo with stout hooked bill. Similar to the more widespread Rufous-browed Peppershrike. Dull olive overall with paler grayish throat and belly. Thin rufous forehead and eyebrow. Yellow on sides of breast is duller and more restricted than in Rufous-browed Peppershrike, and also note Black-billed’s namesake dark bill. Sexes alike. Uncommon in Andean cloud forest from 1,300–2,700 m, usually in the canopy and sometimes following a mixed-species flock. Listen for its song, a series of short warbled phrases.