Do u know that a Hummingbird flap its wings between 50 to 30 times a second ? yes, its a remarkable fact. Actually they do not flap their wings they rotate them in a figure 8. It enable them to go backwards in the air & to delay in one spot to increase rapid wing-flapping rates.Also its allowing them to fly at speeds exceeding 15 m/s.

The Hummingbirds flap their wings 50-70 times per second