Could you put the boxes where they can’t be seen from each other? That is the best way to keep the peace. EABL aren’t always fond of CACH around here and will drive them out. If it’s me, I’m going to hope the CACH win the battle. They seem to lose so many times.
Maybe they want the same box because of the direction it faces, not just the location but neither one needs to be near trees, bushes or a fence. That is asking for trouble from predators.
Gin
Atlanta, GA