I have 4 RIR (2 roos and 2 hens) that are about 3 months old. Yesterday, I acquired 5 Buff Orphington hens and 5 guinea hens. Since I had my other RIR hen and her 7 chicks in the little coop, these all went into the big coop. I was a little apprehensive at first, especially with the guineas going in but I think it all worked out. First rattle out of the box, Horatio, the biggest Roo strutted up to the biggest Buff hen "Pearl" and threw out his chest like he was saying "Hello.....girls!!!!" All the hens looked at him like he was crazy!
WOW I wish I were as lucky when adding chickens. Mine always attack new ones. They are a big bunch of meanies!
that was lucky, I added a 6 month old pullet back into my flock,( I hatched this bird she was rejected by the broody along with her sister who was killed recently) its a long story why she is back with me temporarily but she came back and was like a search and destroy missle i had to segregate her awhile before she calmed down.