I currently have 2 flocks living adjacent to each other for the past 3 weeks. They hear each other at night, and see each other through a fence each day. I'd like to integrate 4 pullets and 1 easy going cockerel with my 7 egg layers. The pullets are as big as my smallest white leghorn. The cockerel hasn't tried crowing yet. I plan to put everyone on 19% Grower, and supply calcium on the side. I had success with the Grower and calcium during the harshest of the winter with my egg layers. My questions is will the pullets stay away from the eggs or should I make a roll-a-way nesting box? The year old's would be moving into the 3 month old's coop, it's the upgraded and bigger one. Rooster on end has been re-homed.