I've been seeing a lot about Buckeye breed lately. We will definitely put them at the top of the list...would they do well with RIR and BPR?
I would think so. Haven't had those breeds specifically, but the breeds I have had in with Buckeyes (when I've mixed them) have worked well. Buckeyes are not super aggressive with other birds, but hold their own well, and aren't pushovers either, if you know what I mean. They go along to get along.