Owls are also raptors although night hunters. I lost my whole first flock of guineas to Great Horned Owls.Okay, redirected myself from the chicken side of things... As I posted there, my guineas never had a problem seeing off the raptors we have in Nova Scotia and that one quasi-attack I witnessed, with the hawk dropping down out of a spruce tree to try and spook a guinea family into scattering, didn't end too well for the hawk, since the male guinea came forward and was willing to fight. I just checked some photos and believe it was a goshawk that was involved that time. I remember being impressed that the male guinea was willing to take on a hawk that stood just as tall as himself...it was a touch bigger than a crow and seemed quite substantial. Anyway, ended in a stalemate at best and I can't recall a single other incident of any raptor genuinely threatening my own guineas, either adults or young, let alone succeeding in killing one. I also don't know anybody who's lost a guinea to a raptor, at least not hereabouts. Maybe they look too odd or move too differently compared to the fowl the local raptors are much more used to, the ruffed grouse and ring-necked pheasants that are actually fairly common where I live? Or maybe they're just really put off by the way guineas scream at them. I never saw a sitting raptor that lasted long once they'd been spotted by the guineas and vocally harassed and cursed at by the entire milling flock. Kind of like owls being mobbed by crows. They usually move on too, to try and find thicker, better concealing evergreens to sit in.
I do remember seeing a home video once of an eagle--bald, I think?--standing over the body of an adult guinea that it had reportedly just killed in the yard of the person videoing the action. And honestly, that's the ONLY case of an adult guinea being taken by a raptor that I know of...presuming the video was for real and not just a case of an already dead bird being tossed out and a passing eagle dropping down to enjoy some tasty carrion!
The teepee looks good, like a game bird shelter. Try scattering some white millet seed near and in the shelter to overcome your guineas' caution. Mine used to be absolutely nutz about white millet. It was like their version of crack or something, the way white bread is like crack to the chickens.