We have all kinds of feral cats, our neighbor runs a cat factory. None has ever hurt a large chicken, but they are nice to have around to help with the mice and rats. We did have a feral cat kill one of our bantys; we saw it carry her away. Our two cats who live here are both afraid to get too close to the chooks, although our female cat will occasionally dust bathe with them. The pound will not "dispose of it for you". They won't accept stray animals of any kind. If they euthanize it at all, you'll be paying for it. If I were you, I'd just leave it alone, unless it actually does something. Chicks, yes, if you have chicks or a setting hen about to hatch that the cat can get to, you definitely don't want the cat around. Or move the chicks to where the cat can't get them.