I have a coop of 14 young chickens, 2 of them are roosters. The pullets have been laying for about a month. The dominant rooster has taken a liking to primarily one brightly colored pullet, and he chases her everywhere. She has no peace. She's taken to hiding beneath the nest box. Is this common? Is there anything I can do to help this battered girl blend in? The other rooster seems to be doing his normal job.