I see. Thanks for your reply Chris. Any suggestions on what I can do next? I can't leave the one chick on its own much longer if it is going to be a normal chick. It wants to join the others, but as it is only half their size it gets bullied by them if I put it in. If I'm going to need another chick of the same age, I'd rather do it asap, as the younger they are, the less illnesses they carry. Do you think I can integrate it with the others, and if so how? And when - at how many days old? I could try putting it in a new environment with just one of the older chicks so the older chick only has this one for company, but it is still going to be a lot bigger.