I had a young hawk INSIDE my run last week. It was sitting on the roost watching the coop door. As I ran to look inside the coop, it started crashing into the sides of the run. It eventually found the doorway & took off. My young pullets were all huddled together inside the coop, while the older hens were hiding nearby in a wood pile. It took several hours for the pullets to get the courage to exit the coop. I was hoping the experience would have scared the hawk silly, but it still flies by every few days. At least the chickens never openly walk in the grass. Just run from tree to tree.