Okay, here's the scoop. I have had these chicks for about 3-4 weeks old. They all run away from my hand when I put it in the brooder to refill water, food, ect. Except for one. This one chick just sits there, away from the others and does not even move when I put my hand in. Yes he can still walk and flap his wings if I pick him up, but he is breathing heavy and is letting other chicks peck at him. He even let me touch him without him even moving. He is awake whenever I see him. My light is about 2.5 feet high, it is on all the time, their food and water is always clean and full. Can anyone help?