This Plastic Humdinger Hummingbird Feeder was made as a 72 oz feeder by request. Some customers stated they could not keep their feeders full long enough because they had so many daily hummingbirds drinking all the nectar so quickly, hence our new 72 oz Humdinger Hummingbird Feeder in Plastic. Easy fill container - guaranteed not to drip. Designed to feed only Hummingbirds. Will not attract bees, wasps, or ants.