My rooster, King Julian, was dropped by an eagle last year, and fairly seriously injured. I brought him inside, warmed him up, and put Neosporin on his puncture wounds. He lived in our master bathroom bathtub for about a week, with bedding, clean water, and food, and now he's fine! He has a permanent limp, but it adds to his charm. On your hen, make sure to check for puncture wounds, especially on her back and sides, because falcons usually strike talons first. If you don't clean a puncture wound pretty quickly, the risk of infection is high because they're so deep. Dawn dish soap and warm water, followed by Neosporin, worked for King Julian. If you have your hen indoors in a quiet area, you probably don't need the heat lamp. As chickflick said, too much heat isn't good either.
