Feather Picking Meanie!

Hi,

I've got 3 RIR pullets now laying - hatched in February, and 3 game pullets - one laying - hatched in March or April. The games were introduced to the reds in August. Since then a new RIR pecking order has developed with a new gal taking over the top spot. (There are no roos as they're not allowed here.) Kung Po has established herself by pecking unmercifully at the other reds (mostly) and terrorizing the games. No blood has been shed, but chests, necks and vent areas are missing their pretty feathers. I have checked and rechecked for mites and other chicken ickies, but have found nothing. Kung Po is the only bird with 100% intact feathers. I've banished her to a pet carrier inside the run for a day and the other birds peacefully got along. Kung Po was in jail till nightfall. The next day she was back at it again. What am I going to do?

 

Hmmmmmmmm, a whole week? Shall I let her out at night or just make her sleep in the dog kennel (fits lg sized dog Pet Porter brand)? I don't really want to let her go and I don't really want HER to be the "Kung Po Dinner"!