I introduced the two new ones slowly and one is aggressive. The aggressive one is an Americauna. The other new one is a RIR. Please help. They have gone from laying 4-6 a day to 1-2. It all started two weeks ago when I brought these two new adult ones into the coop. Everything was so methodical before the aggressive one arrived. All 6 of the originals perch together at night but the two new ones sleep in one of the nesting boxes. I have had the 6 for 6 months. I am pretty new and learning about chickens and hens.