Jimmy, yep, you must have been feeding all the neighbouring bees, what a great little story you told. That would scare me off outside feeding too. I have not had any issues with robbing bees. I only know of two beekeepers in about a 5 km radius of my place, maybe even further than that. Both these beeekeepers that I know only keep two colonies and 5 colonies each, so there is not a huge population of bees (unless there are wild colonies). I am not sure if we have feral honeybees up here or not, I don't think they would live the winter. There could be summer swarms though living places that may die in winter. Don't know.
MrILoveTheAnts. We have similar feeders (gravity feed) for some of the chicken areas. They sound like your pop bottle feeders, but of course hold a substantial amount more. Those feeders do sound coool. I wonder if they sell them still too. Have a wonderful and beautiful day in our great life. Cindi