I've got a chance to pick up 3 nice NH to add to my flock tomorrow. I've got 12 RIR and BA co-mingling, and I've made an area I can keep the new birds separated for awhile. They're all going to be about the same age (20-30 wks). Anything that would be helpful to know about the NH? Any reason they shouldn't integrate well with the others? I'm still new to this, and my 12 hens are doing real well, laying consistently even though it is cold here. Basically, any and all advice, no matter how obvious you think it might be, is welcomed.