WHAT???!!! WHAT DID YOU SAY??? SPEAK UP, I CAN'T HEAR YOU WITH ALL THESE GUINEAS SQUAWKING!!!
Ha ha! A little guinea-keeper humor here!
I have 4 lavender guinea hens here on 1.5 acres, started with them + 1 guinea cock 2 years ago but had to dispatch the cock last year when, unprovoked, he pecked my 5-year-old boy all around his eyes while he was sitting in the sandbox. The hens have been much better behaved, don't seem to miss their husband, and give us hard-shelled, very tasty eggs 9 months of the year.
We find them amusing, think they look like something drawn by Dr Seuss, and appreciate their almost complete self-sufficiency. They're always going around pecking at stuff so I guess they're eating bugs & weed seeds, but here in So Fla there's so doggone much of both that I cannot tell if they're making any impact. I wish they would eat fire ants, have even offered them a handsome cash incentive plus central AC & cable TV in their coop if they would, but they do not.
I don't think they make good "watch dogs" because they squawk so often & so randomly that we cannot rely on them to give the signal when someone or some animal enters our yard. They come from the savannahs of Africa & use their voice to communicate to each other through the tall grass. Ours squawk a lot when they get separated & cannot see each other. Sometimes they squawk to the echo of their voices they hear bouncing off the neighbor's houses. Sometimes they get going in a group like some bizarre marching band pacing around the house.
By the way, my kids think the girls are saying "butt-CRAAK! butt-CRAAK!"
You really should try to go meet some in person to fully realize how they sound. I feel like our neighbors are being very tolerant towards the noise our guineas make. Other folks, and you, may not find them quite so tolerable.