Just got a 21 week old Americana and put her in with my 2 NHR 17 week olds and they went after her pecking etc,so the Americana flew over a 6 foot fence and landed 40 feet away on top of my patio.I have them seperated now next to each other through a fence so I hope they bond. Any tricks to get them to get along,pecking order etc.The Americana was very submissive as she is smaller and outnumbered by the 2 that grew up together but I am afraid they will beat her up real bad.