Rather large, dull-plumaged hummingbird of humid tropical lowlands. Favors forest edge and adjacent clearings with trees, flowering bushes, and gardens. Best field marks are its large size and big white tail corners. Sexes look alike: dull greenish overall with medium-length, straightish black bill, dingy buffy belly, and white spot behind eye (like many hummingbirds). Breast is vaguely mottled and not obviously scaly.