I'm thinking about building my first chicken coop - a newbie to chickens, but I've been doing a lot of reading here on BYC (Mahalo nui loa to everyone who contributes here - fantastic information!) I have built houses, parts for rocket ships, etc, and have lots of tools, so construction is not a big deal but I generally stick with the KISS principle. My choices of building materials are somewhat limited on the Big Island of Hawai'i. My main predators are the Indian Mongoose and feral cats, maybe a neighbor's dog. We have no other varmints here - no snakes, no skunks, opossums or raccoons. I want to build a coop for chickens to roost at night, going to let them free range on 5 acres during the day. I can use 1/2" mesh 19 gauge hardware cloth or I was thinking about using two layers of 2"x4" 14 gauge mesh offset so the holes look like 1"x2" - separated by a few 1x2's (3/4" spacing) and put an electric fence charger on the grid. Hex chicken wire, according to what I've read here on BYC is out. The electric grid would do more to scare the critters away I think. It would be a little more complicated to build, cost would be about the same. Any thoughts on this are appreciated. Crazy, not or ?