A couple of weeks ago I saw a falcon (or similar bird of prey) demolish a pigeon in my neighbour's garden, leaving only a few bones and feathers as evidence. I mentioned it to someone else who had also seen a demolished duck in Wimbledon Park recently, and someone else has seen possibly the same bird in their garden. Has anyone else seen it, or evidence of it? Is it a falcon or another bird of prey?

The most exotic bird I have seen to date is a heron also in a Grid garden, but never a bird of prey before! I am assuming it has escaped captivity.