The bee hummingbird is the smallest bird species in the world, measuring about 2.2 inches (5.5 cm) in length and weighing around 0.07 ounces (1.98 grams). Native to Cuba and the Isle of Youth, this tiny bird is known for its vibrant plumage, which can range from iridescent green to blue. Bee hummingbirds primarily feed on nectar from flowers, using their long, specialized bills to reach deep into blossoms. They play a crucial role in pollination, helping to fertilize plants as they move from flower to flower in search of food.