A cover is what is needed. I had too large of an area for them to roam to get a cover on it, and they weren't smart enough to go in their shelter at night, they just camped out where they wanted. Now they sleep in my lambing shed, have a much smaller area and lots of cover from raspberry bushes and other shrubbery. The orchard just had trees that sheltered the owls and hawks and made the chickens easy targets. I was so proud that out of 50 meaties I started with, I had 47 at 5 weeks. The 3 that died, died from shipping the first 24 hours. It is a bummer losing 40% of my flock only 3 weeks from butchertime. Live and learn. There is always next year. Next spring I hope to raise turkeys too. The meaties are worth the effort, i can't eat commercial chicken anymore. Spoiled.!