Interesting thread. While some of the replies are a bit over the top, I for one, never considered a cat as a predator. I suppose if you have free ranging broods, you could lose very young chicks occasionally. My brooding hens would never let a cat come close, but sometimes even the best of moms can become distracted. My cat and my chickens/guineas free range. They are all known to hang out together in the barnyard. I think they may have a 'co-hunting' system going on, actually. The cat catches and partially eats a mouse, the chickens finish it off...
And I have lost both birds and cats to coyotes, and possibly fisher cats. The domestic cat is the least of my worries as far as predators go!
But I do think that trapping the cat is a good idea. I don't think taking it to the pound is necessary, and would even consider it an extremely cruel act, for both owner and kitty. The act of trapping it alone would likely be enough, but adding some commotion and drama just before and during release would likely send it away for good. (like they do to bears to keep them from coming back into neighborhoods, etc) Let it go, and chase it while hollering, banging pots and pans, or better yet, shooting off fireworks or a cap gun (if legal). You likely will never see it again!
