Hi there! I have 4 baby call ducks that were just recently born on Oct 1st. They have been doing well and growing fast, but I noticed yesterday that one of the babies is having a hard time standing and walking. It's almost as if it cant bend its legs, walks stiff and it tucks its tail underneath unlike the other 3. Or like any that I have ever seen since I've owned calls. Does anyone have any input on this? I checked its feet and legs, no swelling or cuts anywhere to the naked eye. I'm just concerned and dont want the baby to be suffering. It's still eating and drinking just fine. I do have drakes that have been mating with the hen's, I'm wondering if one of the drakes tried "mounting" the baby and hurt it? I've kept them separated except for 2 days I let them all free range together. Help!