A green pigeon must be gorgeous! I will have to pay more attention when I go out because I don't recall ever seeing one, but I have seen beautiful red ones! I am not a bird watcher and I live in a small town where we really don't have pigeons but when I go to a larger town's park, I normally just see regular pigeons with different color variations, but now that my Lovie and Dovie have come, I will definately take more notice of pigeons in the future so maybe I will see a green one.