So I have four ducks. My one pekin has hobbled her entire life. She is active, eats fine, plays the most out of the four, and has no trouble swimming. She is not in pain as far as I know, but she rocks back and fourth as she walks. She’s also pretty hefty and is a lot heavier than the others as they are khaki cambells and are smaller.I don’t know if that has anything to do with it though. She was a gift from my uncle who payed only 25 cents for her as a baby. I wonder if she was cheap because she was bred wrong? Is this something I should worry about?