I have 9 chickens between 8-10 weeks old, 2 leghorn roos, 1 leghorn pullet, 3 ameracauna pullets and 3 Black Austerlorp pullets. I am trying to make them friendly and whenever I pick one up and hold it after I put it down the other chickens and sometimes only the roosters peck at the individual I just held. What is this all about? I want to tame them but don't want them to pick on each other when I hold one or the other. BTW it takes alot of coaxing and treats even get them to come near enough for me to pick them up.