The smallest type of bird is the bee hummingbird, scientifically known as Mellisuga helenae. Native to Cuba and the Isla de la Juventud, this tiny bird measures about 2.0 to 2.4 inches (5.1 to 6.1 cm) in length and weighs approximately 0.07 ounces (1.98 grams). The bee hummingbird is known for its dazzling iridescent feathers and remarkable flying abilities, including hovering in place and rapid flight. These birds feed primarily on nectar from flowers and play a critical role in pollination. Despite their size, they have a relatively high metabolism and must consume large amounts of food to sustain their energy levels.