Not sure 100% on it, I have the hen that was raised with my original flock, she is fine with them, The white hen that was not is ok also. My guinea boys, they only target my oldest rooster, Red, but Red wants to fight everyone
including me. (My Gander will pin him in 2 seconds flat if Red even looks at me.) Rebel, my Australorp, walks right by them with no problem. same with Butters, my silkie Roo, and Tank the CX Roo. All the young cockerels I have, no problems either. From what I have heard, it depends on the rooster, and seems to be the case here too.
Yes, I want to hatch and see if there's any health probs, then I will get serious about selling some. You get 1st pick