Suzi, when we had chickens up in Garner Valley, we had to contend with weasels, coyotes, and moutain lions (not so much bobcats, but had one very shy one). Many of us opted to use dog kennels out of chain link. That kept even the most persistent predators out. Very sturdy, and some folks even wired hardware cloth to the bottom, buried about 6", then filled back in with soil, and then topped with DG (decomposed granite). Made for a bomb-proof chicken coop. They come in all different sizes, and you can actually put a smaller roofed coop inside, and have a pretty large "run" for them, if you're not going to be around during the day to keep your eye out for predators who come during the day. We also had a roof on ours to keep out the hawks and eagles. We never lost a chicken. And that's saying a lot for Garner Valley, which is teeming with wildlife. I had a small coop and used nice plastic bins for their nesting boxes. I could pull them out, empty out the straw, wash them with soap and water, and rinse in a 1:10 solution of bleach, which kept things very clean and healthy. Sure miss my chickens. Be sure to get a few Easter Eggers, Ameraucanas or Araucanas so you get some pretty colored eggs!