Perky-Pet 120TF Top Fill Push-Pull 16-ounce Magnolia Plastic Hummingbird Feeder New patent-pending Push-Pull technology for effortless refilling - just push, pour, then pull-and-lock. Easy to fill wide mouth top and an advanced "sports bottle" like function to facilitate replenishing the nectar. Clear plastic reservoir makes it easy to monitor nectar levels in this 16 oz. hummingbird feeder Easy to clean with fewer parts The top fill hummingbird feeder lure the bird in pursuit of sweet nectar-providing you with hours of joy as beautiful Hummingbirds flock to your feeders