Rufous-winged Tyrannulet Mecocerculus calopterus

Small, warbler-like flycatcher found in the Andes and coastal hills. Mostly gray and white with whitish wingbars, white eyebrow, and rufous wing patches. Similar to Rufous-winged Antwren but lacks yellow on belly and has a gray crown. Actively forages at middle to upper levels of forest, and may join mixed-species flocks. Gives quiet but sharp notes, either alone or in a short series. Erratic in its occurrence and may seemingly be absent from some sites for months at a time; its movements have not been studied extensively.