I have (had) 3 male guineas (2 grays, 1 white) who roost in a big oak tree just outside the chicken coop for 1 1/2 yrs. This morning only one guinea is here and Gray feathers all over the ground, hanging on the coop fence and in the tree so whatever attacked them went into the tree. No white feathers around but neither is the white guinea. I would think a racoon but no body or partial bodies anywhere. Also thought maybe an owl but do they take the bird away? No evidence left behind except feathers??