Flapping bird Rick? Elle may put me wise but I'd be inclined to give it the chance to fly out of a window or door. Little creatures seem scared enough, I believe suffer badly from shock, and if the cat has inflicted internal injuries I doubt much can be done anyway so if they are able, I think, let them go and find thier own peace. When we have caught birds that seem "unsteady" but with no obvious injuries, a dark box in a quiet place seems to be the best plan.