This is my first time posting here, and I joined so I could seek counsel for this matter. Yesterday I observed a relatively young squirrel who appeared to be lying down near some sunflower seeds I had put out for a chipmunk, despite being out in the open. I found this odd, and when I went towards him, he flipped onto his back trying to turn around and tumbled down a crack between the wall and the cinder block steps that lead to the outside basement door. It's a small distance, but the tumbling like that was worrying. I saw him later up on the deck and realized that it was not that he had been lying down, but that he could not stand up. There were more sunflower seeds up there, and he seemed to have a healthy appetite, but he was moving about clumsily with both front feet curled underneath him. It appeared painful to try to put weight on them, and eating was a slow process since he could not open shells with his hands. He appears otherwise healthy whole, and no wounds are visible. His inability to turn without tumbling suggests that this injury is recent. I suspect he probably jumped or fell from too great a height and landed front feet first. I put a long board along the stairs with grooves cut into it so he can get up onto the deck with greater ease, cleared out the area around the basement steps so he can hide more quickly (lot of neighbour's cats around), put out a plate of water, peanut butter and peanuts, and sunflower seeds out of the shell so that he can eat more easily. He was back today and does not seem in imminent danger of dying. There are no wildlife vets around. Is there anything else I should do for him, and what are his chances of survival?