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Your chickens and guineas should be perfectly fine, provided you have a large enough space for them. I have all sorts of fowl together (ducks, turkeys, chickens, geese, and at one time guineas) and I have never had an issue with any of them fighting. You would mostly have an issue trying to mix pheasants/quail/peafowl with any other type of fowl.
Please let us know if you have any other questions!
Your chickens and guineas should be perfectly fine, provided you have a large enough space for them. I have all sorts of fowl together (ducks, turkeys, chickens, geese, and at one time guineas) and I have never had an issue with any of them fighting. You would mostly have an issue trying to mix pheasants/quail/peafowl with any other type of fowl.
Please let us know if you have any other questions!