When I found him huddled in the coop, he let me pick him up with no resistence. His head was bleeding and his eyes looked injured. I put some vitamin A&D ointment on him and put him in a cage by himself. I put some fabric in the cage and also covered him with a warm towel. Now after 2 days, he has perked up but the gnats and flies are really bothering him. Is there anything I can do to keep the gnats off him?