The smallest bird species in the world is the bee hummingbird (Mellisuga helenae), native to Cuba and the Isla de la Juventud. Adult males measure about 2.2 inches (5.5 cm) in length and weigh approximately 0.07 ounces (1.98 grams). Their tiny size allows them to be exquisite pollinators, as they flit from flower to flower, feeding on nectar. Bee hummingbirds have an iridescent plumage that reflects sunlight, making them appear dazzlingly colorful. Their rapid wing beats, which can exceed 80 beats per second, enable them to hover in mid-air, showcasing their remarkable flight capability.