Nicole – Thanks for the suggestion!
Hugh – One other thing we’ve done with the wrens is play their calls from the University of Cornell (we have their “Merlin” app on our mobile phones) standing nearby one of the houses he’s putting sticks into. It makes the male think there’s a competing male in the territory and seems to keep him sticking very closely to that box.
Like we said before, it was far less stressful when we stumbled into this as they nested in our decorative box in the front and we had no idea what perils awaited them.