Bobcat in coop
My vote is for the electric fence. You can go with the electric poultry netting, but I have an upscale version of what this guy did.........
When I say upscale, I mean my own version, built with components similar to the kit and a really hot fencer. But follow the video to see the process and stick with it until the end. Imagine yourself doing that......then imagine the varmint doing that........normally, nobody comes back for a second dose.
HowardE has it right. Electric fence is my #1 deterrent to predators. Keep them from getting anywhere near the coop. I used to lose 1-2 chickens and ducks a month, and I put up 48" high electric net fence 3 years ago, and have not had a single loss to predators since. And I have bobcats, coyotes, bears, fox and raccoons all around. I have game cameras set up around my place, and I get pics of bobats and coyotes every 2-3 days, bears weekly, but they stay away from the birds. #2 deterrent should be a fortress of a coop. Chicken wire is for keeping chickens in, not keeping predators out. My coop has an outer layer of welded fence with 2"x4" holes, and an inner layer of 1/2" hardware wire. The field fence keeps the large predators at bay and the hardware wire fence keeps anything from reaching in. No gaps larger than 1" or some predator will be able to get in.