Getting a guinea was recommended to me. I was told they are very watchful and are very good at noisily letting the flock know when danger is afoot. However, I'm also told that guineas are pretty aggressive toward the chickens. I'm glad I have a solid roof over my current run (did that because I want to be able to leave them out on milder winter days when there's snow or ice on the ground). But with the two Red-tailed hawks that appear to have taken up residency here and the loss of a hen already, I want to add a bigger run and do the post-in-the-middle with strung wire like I saw another member did. I'm at a disadvantage with helping my crew because of my profound hearing loss. I can't hear the hawks at all, but my neighbors and friends who visit me can, even if they are not flying overhead. I can only rely on visual.