Hi, Erin. You can hatch hybrids if the eggs are fertile. They're very interesting looking. Do a search online about "Guin-hens" to get more info. I can't remember if the articles said that hybrids fathered by roosters are more hardy, or hybrids fathered by male guineas are more hardy. But if you let your female guinea sit on the nest, she's at high risk of being dinner for a predator. Me? I'd toss the eggs like PeepsCA said. If I really wanted a hybrid, I'd try to incubate the eggs myself.
Hey Peeps, I have a couple of questions about his too. Would a hybrid chicken/guinea be less likely to roam? Would the hybrid bird be infertile?