WILL MY GUINEA COCK MATE WITH MY REGULAR CHICKENS?
GUINEA HENS MATING
Your guinea cock may try to mate your hens if they were raised together and/or there aren't enough female guineas. I'm in the process of selling one of my guinea pairs, because although the male has a female guinea mate, he frequently tries to mount my chickens. The chickens; however, want nothing to do with him, so it usually ends in yanked out feathers and lots of squawking. The dominant male guinea keeps him away from the rest of the guinea flock, so perhaps the problem could be resolved if the cock in question had a few more guinea girls,
In short, it isn't likely to be a problem, but you want to observe your flock regularly for any problematic behavior.