I'm considering purchasing a granpas treadle feeder for our free ranging flock of 5 chickens. The reason is that we have many chipmunks and squirrels stealing the feed during the day. Currently we are bringing the trough in every night and replacing it in the morning. If we have a predator prof coop and run ( hardware clothed 100% underneath etc..) could we leave the treadle feeder out overnight WITHOUT attracking animals...ex..bears and coons? We have had at least two bears in our yard this year but so far they have not bothered the chicken coop as the dogs have barked and scared them off before they got that far. We would love to not have to lug a heavy feeder inside every night. Please let me know what your thoughts and experiences have been. Thanks!