Go Cat Toys Super Refill feather accessory/refill for Da Bird is different than the Da Bird Refill feathers as it has 3 large pheasant feathers to really get your cat high flying chasing after it. The Da Bird feather refill mimics the sound of a bird in flight. This refill has more twirling action than the original refill and an extra feather to help make the movement more exciting to your cat! Watch as your feline friend leaps into action chasing this bird like toy.