Hummingbird: the Smallest Bird in the World

<p style="text-align: justify"><strong>Hummingbirds</strong> whose bills are long and straight or nearly so are among the smallest of birds. A 5-cm bird can hover in mid-air by rapidly flapping their wings 12-90 times per second, with speeds of 15 m/s. Interestingly, they can fly backwards and are able to store just enough energy to survive, thus being able to suffer from hunger for continuous hours. Hummingbirds drink nectar which provides them with

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