I've had several outdoor cats, and only 1 would actively hunt, and in all these years I only found a single dead bird. 3-4 outdoor cars on my block, never found anything dead. I don't get it when people say cats are such a scrouge.
Maybe they're so well fed now days they don't bother to hunt? Seems people used to be meaner to strays, haven't seen a skinny/sickly cat in ages.