We recently acquired a squirrel who seems to have fallen from a tree.. He had a broken leg and foot and wasn't able to move and seemed to have some head trauma. We've kept him for about 2 weeks now and have been feeding him and giving him water. He's getting a lot better and can run around and climb again and we're almost ready to release him. I'm just somewhat nervous about it because now that it is winter and snowing, we aren't sure he will be able to find food or make a suitable nest. Any advice? I don't really want to keep him any longer because I don't want him to get too familiar with humans and lose his natural instincts, but if letting him go mean he won't survive, I don't think I would want that either.