I have a one year old barred rock hen and friday night I isolated her inside the house because she had a sore on her comb and the very back of the comb was blue. The sore was dry but I put some blu-kote on it anyway. Yesterday she started to sound like she had a broncial thing going on but still no mucus. Today the broncial thing is worse. Any one have any ideas as to what this could be and how to treat her?