I found one 20 foot up in a tree once. In the summertime you can smell a large hive. I helped my dad with his bees for as long as I can remember. I always thought taking a bee hive from a 20 foot oak tree and but them in a thin walled bee box was like moving someone from a penthouse and sticking them in a trailer park. Paul Stamets has done work with bees that show bees inoculate themselves with fungus. If I ever mess around with bee hives at my place it will in all natural logs. No paint, no sealer, ect..