I have hawks circle over the chickens every few weeks but they've never gotten one. The rooster usually warns them and they have plenty of places to get under for cover. I also was give 3 adult male guineas about 4 months ago and they never bother the rooster. They roost in the tree outside the coop and go in the coop with the chickens at times throughout the day. They seem to like to hang around the chickens but NEVER bother them.