Just an observation that may or may not mean anything. I have two fairly large, hanging, galvanized feeders inside the coop for 40+ birds--one in each room. Each day I add two heaping scoops of feed--currently grower crumbles--to what is left in each one. I've never had the feeders go empty in the 24 hrs between feeding. (I store my feed in a Rubbermaid Brute.) While, if I wanted to fill mine to the top I could put more feed in these feeders, other than when I go away, I'm careful about having too much excess feed lying around to attract either mice, rats or wild birds. When I see these 40-pound (or larger) feeders that some people have made and fill to capacity, I wonder if they aren't just feeding rodents along with their birds. Any comments?