While putting my chickens (9 pullets, 1 cockerel, 22 weeks old approx) up for the night, I found some blood in the coop. I finally found the source: one of the Black Australorps had her comb torn. We have separated her for the time being to prevent further pecking and to give it time to heal. It is still mildly bleeding. The wound does not look that serious, but she is panting with her beak open periodically. I am sure this is a sign of stress from new surroundings (in the house) and being separated from her flock, combined with pain from the injury. She is the lowest girl on the pecking order and I assume the injury occurred from our cockerel attempting to mate (he's a little new to the game and hasn't figured out the niceties yet). My question is, Is there anything I can do to calm her stress and how worried do I need to be about her behavior? I would hate to separate her for her safety only to have her die of a heart attack!! I welcome thoughts from more experienced chicken keepers out there.