I have used "one hole feeders" . They were , I think ,for sheep. It is a feeder with about fifty lbs. capacity and one flap cover to the feeder. The deer lift the flap with their nose and eat. It falls shut....no rain damage, no birds , and almost no spillage. I am sure you could make it to hold more grain than that. The only down side is big bucks as they grow their racks have trouble trying to get into the feeder but for does and anything without antlers, it is the bomb. I started mine with wiring the flap up most of the way a few days and then slowly lowering it over time til it was shut and they all caught on fast. They are all metal and I got tired hearing the flap falling shut all of the time so I used some rubber in the right spot and it was peace and quiet after that. 100 per cent no birds or waste. Jim
