We live on a farm so hawk sightings are not uncommon but they have never been near our house and barns. I recently decided to let my twelve week old chickens (mixed flock of Brahmas and Rocks) out of their covered run for the first time. It was about three hours before dusk as I wanted to see if they would automatically return to their roost at dark. They were excited to explore freedom for the first time and quickly began scratching for insects around the outside of the coop. I decided to go grab a soda and snack. I wasn't gone more than fifteen minutes and when I returned there was not one but two red trailed hawks sitting in a small tree not ten yards from them. My approach scared off the predators before they could do any damage but was definitely a close call! My question is since I have large breed chickens will they ever be big enough where the Hawks will no longer try to mess with them or will they only be allowed supervised visits outside the coop/run for life?