Clear hummingbird nectar 64oz | Our Perky-Pet ready-to-use clear hummingbird nectar is pre-mixed and ready for immediate use in a Perky-Pet hummingbird feeder. All you need to do is unscrew the cap and pour it into your feeder. The ready-to-use nectar is made from 100% sucrose and formulated to keep hummingbirds coming back to your yard.