I raised a bunch of them a couple of years ago. The guy in Pennsylania I purchased them from was emphatic that his reproduced naturally and he did not artificially inseminate. Others on here have stated that they are a hybrid and wont reproduce at all, I don't believe that to be true. I butchered most of mine and they were delicious, I did have one go broody, but the cock I had was a standard so changes the equation a bit I suppose, and I never saw him mate with any of the guinea so hmm. Oh and the one that did go broody hid and i couldnt find her for a while but when I did she had been taken by a predator and the eggs were eaten also, long way around the barn to say I dont Know but one breeder is emphatic that his strain has no problems
He did tell me that the cocks are the real problem in the pring in that they are not fertile until the temp gets quite warm. He indicated they have warm lit barns which is why I could by keets from him very early in the year.