I am very glad we covered the whole run before letting our chickens out. I have seen EVERY predator (or their tracks) known in our area within 100 yards of the coop. Bears, wolves, coyotes (lots!), bobcat, otter, mink, weasel, coons, skunks, domestic and feral cats & dogs, 3 kinds of owls and 4 kinds of hawks/eagles.
Our yard has a perimeter fence composed of hardware cloth dug 6" into the ground and running 18" above ground, laid over a heavy woven plastic netting extending 8' up on 4X4 posts. There are 2 strands of electrified tape on the exterior as well, 18" and 48" above ground level.
Only one predator has managed to penetrate in 2 years- A feral cat squeezed through a place where the top netting had not been sufficiently well zip tied to the fence netting. I took care of the issue before he got to have a chicken dinner...
Edited by Bert2368 - 12/27/14 at 2:06am