Hi, I just lost a chicken today, that emerged from the coop with purplish comb and wattles this morning. She was only a few months old and yesterday she was crowing. I thought she was just a late blooming rooster.She crowed so much she list her voice, but I just thought it was making up for lost time. This morning she was breathing badly and let me catch her without a fuss. Her breathing was bad and she kept almost screaming. I isolated her and she continued to have breathing problems. The reference I read said keep her isolated and give her a couple days to rest then decide about antibiotics. I didn't get that time. She died just after lunch. Any ideas as to what it might be? I have a young flock of layers. Are they at risk? Can anything be done? ( I live in a remote area, we don't have a live stock vet, let alone an avian specialist.)