Our first 8 guineas we're so dumb, I thought they were related to the dodo birds from the ice age movie. They would lay their eggs in hidden locations, all over the farm. We had to stalk them to find them. We had a chicken get broody, and no more roosters, (long story too), so we put a clutch of guinea eggs under her. She hatched and raised them. Now I have guineas that scratch like chickens, and understand clucking.
Then, that same chicken got broody again, and raised another clutch. Each generation has become smarter and smarter. Where the first group would go back and forth behind a fence, right to the last post, where the fence ended, only to go back the other way. Maddening! These know there way around, and go to bed each night. Locked in every night. The new ones even taught the older ones. It has been amazing to watch. I like them, and they drive me crazy at the same time. I would miss having them if we didn't have them.
Wife now has them trained to lay eggs wherever she puts the golf ball decoys. Once the guineas get broody, we break up the nest, and they move to the next decoy nest. Guinea eggs are so tasty.
Sorry for the long post.