I just recently bought 6 white silkie chicks from a local feed store. They are about a week and a half old now and I have noticed that one of them is about half the size of the others. Last night I also noticed that it was limping. All the others chicks are healthy and run around and play while this one goes and finds a corner away from the others and falls asleep. They are being fed medicated chick food. If anyone knows anything about this please let me know. Thanks.