Feeding hummingbirds has never been easier than with the Perky-Pet Top-Fill Hummingbird Feeder! Patented Top-Fill technology allows you to easily fill this feeder by simply removing the cap and pouring in 24 oz of nectar. In addition, the spacious wide-mouth opening helps to prevent unwanted messes and spills as you pour. This feeder comes complete with four red flower-shaped feeding ports to attract hummingbirds as they pass nearby. The ports are soft and flexible, giving them a more realistic feel that your hummers are sure to love. To protect your nectar from ants, the built-in ant guard can be filled with water to prevent ants from gaining access. Unlike the narrow opening available in bottom fill feeders, the wide mouth of the Top-Fill makes the feeder much easier to clean. In addition, the feeder can be taken completely apart so you can clean all the hard to reach places. When cleaning is less of a chore, you can be sure that your hummers always have access to fresh nectar. Additionally, the clear plastic reservoir allows you to monitor nectar levels at a glance, so you never run out.