Yes predators will tunnel - many people bury "hardware cloth" a couple feet down lined up with the wall. Another option I've seen is laying hardware cloth buried a bit but along the ground around the perimeter so predators would have to start digging a couple feet out to get to the wall or fence (or whatever your exterior perimeter is).OK, I turned the incubator off the other day, because if any eggs were going to hatch, they would have done so by now. There's still no movement in the full egg where I saw movement weeks ago. RIP, little Swappy. And tonight the eggs go out in the trash, because tomorrow is pickup day, and they're going on top. If they broke open, they'd probably smell.
Today the coop got Virkon-S'ed, and I installed a bright white and flashing red motion sensor light aimed at the coop. It should help scare off any predators, if it doesn't give the chickens heart failure first. The dogs were impressed when I tried it out indoors.
Yesterday I had to go to Flagstaff, and stopped off at Bookman's and bought a copy of Raising Chickens for Dummies. Been reading it. Lots of useful info there, too.
Question: All the little coops like this one don't have any mesh underneath so the chickens can scratch at the soil. Do predators tunnel under the side to get at the chickens?