The Smallest Bird in the World is the Bee Hummingbird. Don't let their small size fool you! They fly extremely fast - up to 80 km/h! They do upto 80 swings in a second. They are also very mobile, fervent birds and are extremely courageous in attacks with larger birds.
The male bee hummingbird weighs approximately 1.7g, and its length is about 5cm. Half of the length is made of the tail and the beak! Females are a bit larger compared to the males.
This species is endemic to Cuba and Isla de la Juventud. The feathers of the bee hummingbird make it look like a tiny jewel as can be seen in the pictures.