I have four guineas about 15 weeks old, and two "new" keets that are about 8 weeks, maybe 9 (don't know for sure). Anyway, I put them together for the first time this morning and so far - - cross your fingers - - they seem to be getting along well. There was a little poking from the older guineas, but the younger ones immediately took a good dust bath, which started a dust bath frenzy, and then they all turned to fresh food and are wandering around looking for more. Interestingly, the younger ones want to get up under the older, and generally the older guineas don't mind at all. Hmmm. Parenting maybe? Submissive behavior? Or is it just that they're shorter? . But whew. I'm just happy about it, that's all. Just wanted to tell that I think I got something right! Happy Holidays everyone!