Premium Pop's Birding Nectarade Hummingbird Nectar Concentrate has an optimized formula to attract and nourish hummingbirds and keep them coming back. Pop's hummingbird nectar has extra electrolytes to aid in hummingbird hydration, extra calcium to support healthy eggshell growth, and wildflower extracts from flowers visited most in nature. Small-batch craftsmanship includes 100% pure cane sugar and no harmful dyes or preservatives. Makes over 150 oz.Manufacturer model #: NCT50.7. Optimized for better hummingbird health and satisfaction More electrolytes for hydration Extra calcium to support healthy eggshells Wildflower extracts from hummingbird favorites