Taking stock of wildlife

I was driving home yesterday, watching the territorial disputes of male blackbirds and the wood pigeons drinking from the puddles, when I did a double take. There was a very unusual pigeon beside one of the puddles.
It was slightly smaller and slimmer than a wood pigeon and had no white neck-ring. Instead a patch of metallic green shimmered in the sunlight on the side of its neck, with some salmon pink on the throat. This handsome bird was a stock dove.