My brother, who is a county extension agent, came to check out my new coop and run. I got approved but he did caution me to put the girls in the coop every night because of owls. My run is covered but he said even then, the owls will grab the chickens through the wire with their talons if they get near enough to the sides and EAT THEIR HEADS OFF through the fence!!! I guess this wouldn't be an extremly common occurance, but sheesh-what a way to go. Just thought i would pass that along, it was surprising to me.