I had the opportunity today to acquire a 4 week old Barred Rock Roo, in the hopes of adding him to my "flock" of six 4 week old pullets (two each of Barred Rocks, Buff Orps, and Sex Links. I have read several threads and links about introducing a new member to the flock. He was from a "trusted" source locally, and seems to have no problems. I currently have him in a separate small kennel unit, inside my coop, where he can see the girls, and they can see him. Any suggestions as to when it might be ok to put everyone together? Is there anything I should be looking out for here?