I want to know too! I have chickens, turkeys, and ducks, and hope that they can live with one of those three groups. All are pretty much freerange, but I need to know if my month old guineas who get along with everyone will turn into monsters.
Right now they have a cute multiracial setup, living with baby turkeys, ducklings, chukars, and pheasants. Everyone gets along and they are just adorable when they all cuddle together to sleep. So far everyone's happy in the large pen. When they stop being happy then I will have to seperate.
Do guineas have to get mean, or are they more like chickens and turkeys, where some are mean and others are friendly?