The Perky-Pet Large Capacity Glass Top Fill Hummingbird Feeder features an innovative patent pending top fill technology for effortless filling! The 24 ounce capacity of this feeder ensures that there is plenty of nectar to keep your hummingbirds happy and fed! It includes an easy to fill wide mouth top - just remove the lid, pour in the nectar, and you're ready to feed the hummingbirds. The four white flower feeding ports are another highlight. Their soft, bendable, life-like construction make them stand out from other hummingbird feeders on the market. Your hummingbirds will feel right at home with this feeder.