We got the last three ducks from the feed store this Spring. The Pekin was lame, but I couldn't leave her behind. She is about 7 weeks old now, I've had her for about 2.5 weeks. I think she has a niacin deficiency and have been sprinkling brewers yeast on her food and giving her vit B shots. She has not made any improvement. Both legs splay out to the side at the "hip", do not bend at the "wrist", and feet roll inward. She walks short distances with difficulty while dragging her behind, and also swims with some difficulty, but does do better on water than on land. Her two rouen mates are starting to venture further from their house and it distresses her that she cannot keep up with them. The bigger she gets, I'm assuming the harder it will be for her to get around. DH says I should put her down now, my kids think I should wait until she is eating size (they named her Marshmallow so she will taste sweet ), and I don't know what to do. Thoughts?