Droll Yankees Yankee Flipper Bird Feeder- GreenDroll Yankees Yankee Flipper Bird Feeder The Yankee Flipper Bird Feeder is a motor driven, weight activated squirrel proof feeder. It allows birds to eat and saves seed by keeping squirrels away. One of the most trusted brands in squirrel proof feeders, Droll Yankees created a tube style feeder that's easy to fill and clean. This feeder works great for a variety of birds and bird seed mixes. Motor driven, weight activated perch ring allows songbirds