Hello! New here. We have 6 ducklings (about 6 weeks now). We bought them from TSC and our smallest one has always walked with sort of a limp. As it grew we hoped it would get stronger but it still can only take 3-4 steps and then sits down. It can stand up to eat, drink, swim if needed but doesn’t forage like the rest. Just stays close to the duck house. The vet said probably birth defect and it’s not broken. Since I’m new to ducks, I want to give it the best quality of life. Any advice?