Large, gray sunbird with a long, down-curved bill. The wings and tail are blackish, while the underparts are paler than the back. Can show red tufts on the shoulders, though these are usually concealed. Found in forest, mangroves, and scrub at low elevations, mostly near the coast. Most distinctive vocalization is a short series of “chyep” notes that usually goes up then down. Olive Sunbird is similar, but Mouse-colored Sunbird is gray rather than olive-green.