One of my ducklings has fallen onto the floor a few times (she jumps a lot and has managed to jump out of some people's hands, I'm really careful with them but mistakes happen) And out of the two, this one sits more than the other. She walks fine, maybe a little unbalanced but nothing seems to be off. I feed them brewers yeast in their food but I am worried because she sits down a lot more than the other. Is something wrong with her legs from the fall? Will the brewers yeast help with any problems? Or is this a normal thing with young birds? She is a black swedish duckling and the other is a pekin.