Well I agree with Emz26 and Joe the Lion, I would never deliberately run any living thing over and in fact a very similar thing happened to me on Saturday morning, I was driving through a village uphill at barely 30 and there was a pigeon on the road, I slowed down to give it chance to move away and it waddled across my path and onto the other side of the road whereupon an idiot flew up behind me and veered out and round me......he/she/it had a passenger and they were both grinning, I don't know if they hit the pigeon or not, I couldn't see it in my rear view mirror so I hope it escaped but it was wilfully done with the intention of hitting it and far in excess of the speed limit.
johnlambert, do you never consider that magpies or any other so called "vermin" have no choice into which form they are born...are they not entitled to their lives the same way as we are? And are they not as they were made and so feed on other species by default?
PS you should try hugging a tree, you can actually feel their vibes!