Is it true kolibris can fly backwards?
by 
wickedwillie
ANSWERS: 2
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Yes. When it comes to flying, nobody does it better. Like a helicopter, a kolibri or hummingbird can go up, down, sideways, backwards, even upside down! This is because most of its wing is made of hand bones instead of arm bones like other birds. Hummingbirds also have muscles that power both the up and down stroke instead of just the down stroke as in other birds. They can beat their wings up to 200 times per minute. Hummingbirds are such good fliers that most of them never walk as far as 2 inches (51 millimeters).
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Lot's of things can fly backwards. A very light aircraft such as a tiger moth (small biplane) produces enough lift to keep it airborne at low speeds. So when flying into a headwind the aircraft could be stationary or fly backwards. It is theoretically possibly for any aircraft to fly backwards if the oncoming wind is strong enough. This is due to the fact that the resultant airspeed is the speed of the flow over the wings. The aircraft need not be flying forwards with respect to a point on the ground for a flow of high enough speed to meet the wings. Theoretically.
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