Both the Steller’s jay and the blue jay have conspicuous crests and wings and tail barred with black. See also the Florida scrub-jay and the island scrub-jay (which do not overlap in range).

A nearly unmistakable dark blue, black-crested jay with variable white or blue markings on the head. The wings and tail are a vivid blue, with fine black barring. The head, including the crest ...