Hello, I have 6 week old pekin ducks. One of them is now "walking" on its leg.... flipper&leg. up to the knee joint. she is getting around, kinda flopping. she will occas. stand up, but again it is on the knee joint. Any ideas? I don't really want to put her down. she is eating and drinking, but is smaller than the rest. she was hurt when they all ran to one side of the box and she was flipped up side down and they walked on her the other day.