Rock dove (Columba livia.)

The rock dove or rock pigeon is a member of the bird family Columbidae. In common usage, this bird is often simply referred to as the "pigeon". Wikipedia 

Full flickr version:

Canon 6D, Canon EF 100-400L ƒ4.5-5.6 IS USM, at 365mm, ISO500, 1/400, ƒ/5.6