My family is very new to raising chickens. We traded a rooster for a hen, and put the hen (full-grown White leghorn) in with our flock. Our flock is 5 3 1/2-month old mixed-breed chickens (not including rooster traded today), 3 roos and 2 hens. The hen rode back home in a carrier with one of our roos, and they got along fine so we thought she'd be okay, and we checked on them several times. Somehow our other chickens managed to beat up her without making any noise, and without us seeing. The leghorn has a torn comb and a deep puncture wound on the back of her head. I disinfected the wound and put ground pepper on it (someone said that stops bleeding, seems to work) and anti-biotic ointment. I put her in a dog crate with food and water, is eating and drinking, but whenever I open the door she dashes out. Is there any other treatment I should have done on her? What can I do to calm her down, and how long should we wait before introducing her again (via putting the dog crate where the chickens can see one another)? Sorry for long post!