Guinea fowl are a wild bird native to Africa. They lay a hard shell pointy egg that you can eat. Guinea fowl meat is a delicacy.
In Australia the main use for keeping guinea fowl is to eat bugs in vineyards and orchards. (Organic bug killers).
They are also kept to alert owners when predators are around. They make a racket when foxes or something strange to them has come into their territory, warning each other present of danger. They also call each other to roost at night.(noisy)
I have seen a flock take on a fox as a flock. But the norm is foxes like guinea fowls to eat. Guineas usually roost high in trees at night so avoid foxes well, but you tend to loose your guineas in nesting season because they nest on the ground, foxes get the females sitting on the nests and defending their nests.
These birds are not meant to be kept in the suburbs they are a free range birds that you can keep in your chook pens, but over time they tend to find the highest closest tree and roost there at night. Free ranging during the day to return to their roost at night.
If trying to establish a flock of Guineas on your property, it is best to start with young birds and lock them up for a number of weeks to HOME them. Just like you would with your chickens to teach them to come back to coop at night for protection. Once homed let them out to free range during the day, they will return to chook pen etc. at night for a while to be locked in but over time, you will find they will find the highest tree in the vicinity of chook run and roost there at night. (I would not cut wings of guinea fowl; they need to be able to fly well to avoid predators) So I would use a roofed pen to HOME them, before allowing them to free range.( Guinea fowl fly well)
Guineas are a flock bird, so need more than one bird to live together. In nesting season the whole flock looks after the females as they lay their eggs. If you watch your flock closely in the middle of the day, you will be able to work out were they are laying their eggs. The flock will walk past the nest site and drop a female off to lay her egg. Then come back past as a flock pick her up and drop the next female off to lay her egg. They are fascinating to watch once you realize what they are doing. Never approach the nest site while they are around or they will find another site very quickly, always leave a few eggs in the nest when collecting eggs to ensure they continue to use that site.
Guinea fowl flocks are so entertaining, watching the antics they get up to, it is lovely seeing large flock moving across paddocks eating grass hoppers, worms , etc
They are fantastic to keep around orchards and vineyards to keep those insect populations down protecting fruit trees and gardens from bugs.
They are not a pet, and not meant to be kept in the suburbs.