The neighbors buy an assortment of poultry every spring and, one by one, varmints kill them. Last years flock was no exception, but two guinea hens lived to see another spring. Unfortunately, something has happened to one of those: she might be somewhere setting on some infertile eggs, but my guess is that an opossum or raccoon got her (I do hope I don't get accused of killing her, as happened with an old rooster belonging to these folks).
I've had guineas of my own in the past, and I know they are notoriously noisy. However, as I remember, the ones I had did shut up once in awhile. I don't know if it's just because she's lonely and looking for a friend, or whether I've simply forgotten how much they squawk. I was really surprised when I got up at 5 AM and heard her out there in the dark with her constant "per-TWEET, per-TWEET". If you've never been around guineas, here's a very short video that will let you hear her noise. I need to check out my camera; lately my videos have not been up to snuff, and I'm wondering if I've accidentally changed a setting. Anyway, you can hear it just fine. It's still being processed at present, but it ought to be available soon.