Hummingbirds prefer the nectar ratio found in this formula. That’s why it’s so easy to attract hummingbirds with this liquid nectar concentrate. Calcium and vitamins support the healthy development of baby hummingbirds. Contains over 50% more sugar than other liquid nectar concentrates to resemble the flowers hummingbirds feed from in nature. Simply mix one part water concentrate with three parts water-no boiling required. Add water—and mix right inside your feeder for instant nectar. You receive one 32 oz. bottle which makes 128 fluid ounces.