We have a local park and I help when there are issues with the ducks. I've had several that have issues with their feet. They limp and their feet curl up. I usually bring them home and after a few weeks or a month they are able to walk and go back to the park. I was told it was lack of nutrition that is causing it. I have one here with both feet bad. She just rolls on her side when she tries to walk. I've been feeding her scratch grains for ducks, romaine lettuce, peas, mealworms and other greens. I need to make sure I am giving her the right stuff. I also want to know if it is a nutrient issue causing it. It is not bumblefoot. There are no injuries and they don't seem to be in pain. I can provide pics and video.