I have 2 pekin ducks. I have had them for two weeks now. One of the ducks was swimming while the other one was playing on the ground and when the one duck jumped out of the water, he hit the other ones leg. Now the duck has trouble getting up off the ground and has trouble at first trying to walk. Once the duck gets up he walk fine like there is nothing wrong at all. I am new to ducks so anything that y'll could help me with would be great thank you.