Eastern turtle dove in emergency takeoff
@First the dove flaps the wing risen up right above vigorously and produces the downward air current. Farther the dove goes the wing to right under and pushes down the air enclosed with the wing and the bent tail. It has been known as gthe mechanism of slap and openingh that the air current is drawn in downward as the wing risen up right above is opened. The dove kicks vigorously the ground by the legs at the same time. The above flapping will not be able to continue because of the large force burden and the large energy consumption.
(Prod. Oct. 2001, full]scale, No.2)
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