Caption A kind of head ornamentation known as a shell crest is seen on this English trumpeter, one of some 350 breeds of rock pigeon, one of the most diverse bird species on Earth with breeds of ...
Wings make a loud clapping sound when flushed. Polytypic. Length 14.5". Larger, with a longer tail than a rock pigeon; blue-gray on the upper parts with contrasting blackish gray flight feathers ...