Bee Hummingbird is the smallest bird. It is also known as Cuban bee as it is found mostly in Cuba. It measures 2.25 inches in length and 2 grams in weight. We cannot see its wings while flying as it flaps its wings 90 times per second. The heartbeat of this bird is 1,260 times. The size of its nest measures 0.78 inches width and 1.2 inches depth. Its eggs are smaller than coffee grounds.
