Description (adult of the nominate subspecies of the rock pigeon):
32-37 cm long
64-72 cm wingspan
Dark bluish-grey head, neck and chest with glossy greenish and reddish-purple iridescence around the neck and wing feathers
Orange or red iris with pale inner ring (adult) or brown or greyish brown (juveniles)
Black bill with off-white cere
Red feet and legs
Distinctive twin black wing bars
White lower back feathers