Probably the most common and well-known black bird with a blue head is the Common Grackle. Significantly larger and nearly double the weight of blackbirds, mature Common Grackles of both sexes have ...

An unusually long-tailed black-and-white corvid with a black bill. In good light, black on wings and tail shine with iridescent green, blue ... but the birds are easily able to quickly change ...

Larger, with a longer tail than a rock pigeon; blue-gray ... gray on the head, and breast tinged pinkish; narrow white half-collar across the upper hind neck, with iridescent greenish below.