We rescued a pair of ducks and the male has a limp from being attacked by a hawk. Since he doesn't use one of his feet very much the nails on that foot are twice as long as the nails on his other foot. I am wondering if we can trim them. Could we use a dog nail clipper? Do we have to worry about hitting a vein and causing bleeding? Should we just leave him be? I'm worried the long nails make it harder for him to walk than it already is. Thanks!!