Well I have to agree with Lady T.............if you are missing humming birds they are at her house, and mine. We must live in the migratory path in Tn. Have 9 feeders which I fill every other day..........My husband stocked up on 20 bags of sugar, we have 5 left. Her video on you tube was great. We have more than we can count........we have counted at least 40, but you go blind trying to count them when they come in to feed..........We love our birds.