If you think you'll have coyotes trying to chew into a heavy wooden outside nest boxes......you might start thinking about hot wire/fence around your coop and run.Thanks aart for prioritizing the height of nest boxes. Everything I build is sturdy (unfortunately, that also means more bucks..), having dealt with various varmints ("vvv"?) in several states.
The local "builder guy" who was here yesterday to view my project deals with ambitious foxes, but he had no ideas for building external nest boxes. He has a commercial steel nest box INSIDE his "chicken wagon"...a hefty wheeled coop that he moves via large tractor around his pecan farm. We have no foxes. He has no coyotes.
Should I give up the nifty idea of "outside" nest boxes? Still seems like a good idea to me.
If it would attempt to chew into the nest box, who's to say it wouldn't try to chew into the coop itself?