A good friend and I did a raising, and processing comparison between Guinea fowl and Ringneck pheasant this year Both species raised on 30% protein gamebird ration. My outlook on them as follows...
Guinea are hardy and almost never have health issues, grow faster and more prolific. Free range well, without issues. Ringneck are less prolific and cannot be free ranged, but are hardy birds in confinement. Both brood and raise their young.
Guinea are not cannabilistic, as pheasant can be between males in confinement. Guinea are less human social than pheasant however, at least in large groups.
Gunieas were easier to process, there was almost no difference in flavor, both slow roasted at the same time. Frankly, liked the guinea better for a table bird. Less hassle to raise, can be free ranged to serve a second purpose, insect control! Thoughts, opinions welcome, just MHO. Guineas won with me, hands down for a different food source, and dual purpose bird.
Well yes, they are loud, and that's another plus for me. I am in cornfields, woods and have predators I want to know are around. Guineas warn me of any current risks.
I am not in town, and my one neighbor also keep geese, much louder. I post thoughts to help others who are making homesteading decisions, and to try to help others who are keeping multipurpose birds. I do not recommend any pheasant type fowl in town aside from quail. Guineas would not make a neighbor happy, of course..
Not everyone has neighbors, however. And not all neighbors feel a loud bird is an issue, just like my neighbor and I feel. Last month, my guineas attacked a red tailed hawk going after their gosling and saved her. Our flocks comingle, share the pond and creek, and coexist. We discuss our flocks and other livestock prior to purchasing them, we try to be neighborly and considerate of each others families. I have lived here since 2003 and always have a good relationship with them.