Plumage colours and patterns in Rock Pigeons are highly variable. Most birds are pale grey with black wing bars, purplish-red legs and feet, and a metallic green to reddish-purple iridescence on the neck and chest (fig.).

They have an orange iris and a grey bill with a pale mark near the nostrils, yet leucistic (fig.) and white pigeons also occur, with the latter having black irises, reddish legs and a pink bill.