Guinea Fowl are cheap to keep, they eat a lot of grass and other greenery, so if you can keep them outdoors they won’t need a lot of extra food.

Mine are fed layers pellets in the morning and mixed corn when they are shut in at night, they love the corn and it's an excellent way of persuading them to go to bed in their house.

I provide a drinker in the house and also a supply of grit, I use an oyster shell grit, preferably the finer grade rather than the larger, coarse grade used for hens.