Perky-Pet Core Top-Fill Hummingbird Feeders feature silhouettes of classic Perky-Pet hummingbird feeders you know and love, now with Top-Fill technology. The feeders’ wide-mouth opening and Top-Fill design make it easier than ever to fill an clean – just remove the lid and pour! While you enjoy time saved from filling and cleaning, your hummingbirds won’t be able to resist the feeder’s lifelike flower feeding ports. They are bright, soft and flexible just like the flowers they visit in nature. Each feeder also features an ant moat and natural bee guard to keep insects out. One thing is for sure, these feeders are a favorite of birders and hummingbirds alike.