The Perky-Pet® “Perky’s Finest” Red Flower Top Fill Plastic Hummingbird Feeder is so easy to use! Simply unscrew the cap, pour in your nectar, and you’re ready to go. The top fill, wide mouth opening means no spilling through a tiny opening and no inverting after filling. The patent pending technology in the base allows just enough nectar to be dispensed for the hungry hummers. This feeder features a 16 ounce capacity, 4 soft, decorative flower feeding ports, and a built in ant moat on the lid. The built-in ant moat lid is able to be filled with water to block the ants from getting to the nectar.