Tammy,
Great info, thanks so much! I do have white millet that I purchased just for this trap. I also have another Nestbox that isn’t in use so I am waiting on the Van Ert trap that I ordered after it was recommended to arrive. I do have to say though that the two house sparrows that I was seeing daily near the bluebird Nestbox have not been seen for at least four days now. Is it possible that they moved on and found another nest site? The bluebirds put up quite a protest when they were around and I do spend a lot of time watching the bluebirds so I think I would have seen them if they were still coming. Should I bait the trap anyway?