the European wild pigeon (Columba livia) from which most domestic varieties are derived: now widespread in most cities of the Northern Hemisphere
See rock dove in American Heritage Dictionary 4
noun
A bird (Columba livia) native to Europe, North Africa, and Asia but widely distributed elsewhere, having variously colored plumage with iridescent markings on the neck. It is the common pigeon seen in cities and frequently domesticated. Also called rock pigeon.