A slim species of mountain forests where it feeds on insects at middle elevation. Males have a black head, chest, and back that contrast with a yellow belly and rump. Females are dull yellow-green above and dingy yellow below. Montserrat Orioles are larger than warblers, vireos, and tanagers and they have a long, relatively thick-based and sharply tipped bill. No similar species occur within its range. Vocalizations include loud whistles and harsh chrrrr-like calls.