Greenish Elaenia

Medium-sized parakeet, bright lime green above with whitish face and chest, pinkish bill, and blue wingtips. Native to South America, where it is found in various open habitats, especially rural agricultural areas and towns. In introduced range, can be found locally in large cities. Builds enormous stick nests, often on large structures like cell phone towers and power poles; "Cliff Parakeet" of arid southcentral Bolivia manages to build, quite impressively, on sheer cliffs. Listen for its harsh, screeching voice.

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.

Plain olive-green above and whitish below with no wingbars. Red eye of adults is not always easy to see; immatures have brown eyes. Dark stripe through and above eye. Larger and thicker-billed than warblers. Breeds in mature deciduous forest. Often sings nearly nonstop throughout the day; listen for repetitive musical phrases coming from the treetops. Often with flocks of chickadees and warblers during migration. Winters in South America, where it could be confused with the very similar Chivi Vireo, from which it is best distinguished by voice.