The Baltimore Oriole is a small blackbird that is 20cm long and weighs 35gm. This bird received its name from the fact that the male's colors resemble those on the coat-of-arms of Lord Baltimore. At one time, this species and the Bullock's Oriole were considered to be a single species, the Northern Oriole.
Adults have a pointed bill and white bars on the wings. The adult male is orange on the underparts, shoulder patch and rump. All of the rest of the male is black. The adult female is yellow-brown on the upper parts with darker wings, and dull orange on the breast and belly.