I have a silkie mix chick that hatched about 4 hours ago. In the incubator it stumbled around fine like a normal newly hatched chick. I moved her to the brooder with the other chick that had hatched out. The second chick is fine and the first is not walking anymore. She's scooting on her bottom and flapping her wings instead. Her feet are out in front of her and she can move them but she doesn't put them under her. Could this be a vitamin deficiency?