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... It's actually attached to the wall of my back porch (really convenient because I built the nesting boxes INSIDE the porch and just put one open end into their coop. I can step out on the porch, open the cupboard doors on the nesting boxes and retrieve the eggs without having to deal with inclement weather!).
That's brilliant....
... topped it with the plastic chicken fence. The floor is dirt-covered concrete. I suppose a truly persistent predator could chew through the top pretty easily but it would be one very intelligent predator to think of climbing up to the top to begin with, he'd have to drop into the pen from above and would then likely be trapped. And he'd have to do all this very quietly, even at night, since my bedroom is only about 8" from the pen.
Raccoons and possums can climb anything and if they can shred chicken wire they can shred plastic. I have the same type dog kennel for one of my coop runs and coons and possums are in there all the time. And it's covered.
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