flying of a bird in air shows-
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Birds pose an especially elevated risk to military aircraft flying at air shows because the aircraft are often operating at very low altitudes—deep in the high-risk zone for bird strikes—and at the edge of their performance envelopes where margins for recovery can be slim to none. And these strikes do happen.
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Mechanism of flight in birds
A bird's wing produces lift and thrust during the downstroke. The air is deflected downwards and also to the rear. The bird reduces its angle of attack and partially folds its wings on the upward stroke so that it passes through the air with the least possible resistance.
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