Good ideas. My cat might really like to snag one of them through the wire. He is a rodent hunter, but leaves the birds pretty much alone. I'm hoping I can convince him that the chooks are family, too.
The ventilation is front to back, and there seems to be a fairly good sized window on both sides, so I think that will be OK, but the diggers are a real possibility. Our coop and run (whatever we end up with) will be inside a chain link fence inhabited by three dogs, so outside predators (mostly coyotes and raccoons) generally stay clear of the area, but you can't count on that.
My tentative plan is to let them range in the yard during the day when I'm home, in the enclosure when I'm gone and shut in the coop at night (for their own protection). Some of that may depend on the girls I end up with. It sounds like they have distinct personalities.
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