I have 2 rocks and a cochin, all about 5 months old, hand raised. I adopted 2 handraised new pullets, an auracana and a giant, about 10 days younger than the others but all about the same size. This will be 3 weeks ago tomorrow and the "old" girls are still mean to the new ones. I tried the suggested putting them on the roost after dark when the others were sleeping but they just don't like them. I love my new girls and hate to see them bullied up into the hen house all day long while the others get to enjoy the nice sunshine. I put them out to free range separately for at least an hour a day (when I'm home) but I don't think it's enough. Any suggestions?