i live on lake springfield, and a goose with an injured foot appeared in my yard about a month ago. there's a big gash running along the crease between the foot and the leg. we've been feeding it bird food, and giving it water, and i've seen it swim away at night, then comes back most days. is there anything at all that can be done for the goose? he hobbles around the yard, and i just wish somehow his leg could be fixed.