My roo is 2 1/2 yrs old, a LF cochin. I noticed a few days ago that his comb has been frostbite, it's cold here in Cincinnati! Today when I was feeding, I noticed he is huddled in the corner, crowing this random strange crow, for him. It's wimpy and scratchy, usually loud and robust. I isolated him and put him under heat lights. He seems pretty light, from the big guy he was this summer. He tries to drink, but seems to be gasping for air, trying to drink but then panting with his mouth open. I suspect a respiratory infection, not sure how to treat it. I do have tylan 50, but don't know how much or how to administer. I am gonna take him some scrambled egg and oatmeal. Can someone help me treat him? Thanks.