I followed the advice in this thread and put my 4 new babies out with the big girls and it's been FABULOUS! I started them out in a wire dog crate inside the coop, then propped open the crate door so they could go in and out, and then removed the crate when they seemed to be holding their own. They're now pretty much 100% of the flock, with even the grumpiest hen leaving them alone . . .with one small hitch. During the integration my bantam fleur d'uccle was broody, and spent all of her time in the nest box with imaginary chicks of her own. Now she's coming out of the broodiness, and she's going after the babies whenever she sees them! They're about her size, and all are terrified of her craziness. I know they'll soon be bigger than her, and she isn't hurting any of them, but it's a twist I wasn't exactly prepared for . . . even the best-laid plans are subject to revision when a banty is involved.