Rock Pigeon (Columba livia)

Often maligned as a "flying rodent," the common rock pigeon is actually a noble beast. Take a look at this candid picture.

Furthermore, rock pigeons demonstrate a remarkable amount of phenotypic diversity. In the average flock one will see a splendid variety of patterns: brown, blue, gray, white, black, spotted, and rusty-red - they're all the same species!