The world's smallest birds are hummingbirds, which are native to the Americas. They can hover in the air, feed on nectar from flowers, and have bright colors. The smallest hummingbird is the bee hummingbird, which is only 2 inches long and weighs 2 grams. It is found only in Cuba and is endangered. Other very small hummingbirds are the Esmeraldas woodstar, the bumblebee hummingbird, and the vervain hummingbird, which are found in South America and the Caribbean. https://cutt.ly/2wOTjEQe