Do a search on "curled toes." Here's one link - it's a chick, but still gives you the idea on the 2nd post w/pic: https://www.backyardchickens.com/t/51112/chick-with-curled-toes
Most seem to have a high success rate of "fixing" curled toes. Glad its just the toes!
The curled up toes you MIGHT be able to work on...you can cut out a (duck shaped) foot from cardboard, gently spread the toes out on top of that form, and use bandaid (sticky part only) across the top of the foot to hold this "shoe" securely in place. Leave it on for several days and see if it...