bird birds bread columba livia domestica common domestic pigeon fancy pigeons fauna feathers feral pigeon plumage prolific rock pigeon symbol. symbolic variations variety white Columba-livia-domestica domestic-pigeon fancy-pigeons feeders flock gregarious iridescence iridescent pests pigeons plumage-varieties resting roof roofing tiled tiles tiling appearance color colorful colour colourful ground feeders pigeon pie plumage varieties appetite feeding garbage greedy scraps