First Nature's specially formulated Clear 16 ounce Hummingbird Nectar is a premium concentrate that ends the mess of feeding hummingbirds with no messy sugars to boil or mix and no sticky clean-up. This 16 ounce bottle makes a half gallon of nectar, just add three parts water to one part First Nature Nectar. Scientific studies have repeatedly shown that hummingbirds prefer sucrose to the monosaccharides glucose or fructose and First Nature Nectar uses the finest food-grade for simply amazing results.