花蜜, or nectar, is a sweet liquid produced by flowering plants. It is secreted by glands called nectaries, which are often found in the flowers. Nectar serves as a food source for various pollinators, including 蜜蜂 (bees), 蝴蝶 (butterflies), and 鸟类 (birds). These creatures are attracted to the sweetness and help in the pollination process by transferring pollen from one flower to another. The composition of nectar typically includes sugars, water, and small amounts of amino acids, vitamins, and minerals. Different plants produce nectar with varying sugar concentrations, which can influence the behavior of pollinators. The collection of nectar by 蜜蜂 is essential for honey production, making it a vital component of many ecosystems.