I have 4 RRs, 3 leghorn and 1 mutt hens and a leghorn rooster who is the dad of 3 of them. For the past few days he has been shooing one of the white hens back into the coop as soon as she comes out in the morning. It appears she's in detention of some sort. If she so much as pops her head out of the coop, he chases her back in so she forced to roost all day in the top far corner. Nobody's pecking her or anything. Anybody have any idea what's going on?