Green-winged teal in emergency takeoff

　The green‐winged teal first stands up the body, flaps up the wing to right above, and flaps down it with vigor. Then the pull in of air, the push down of air, the compression of it and the push down of water by hitting wing will occur in order, and they should produce a large reactive (up‐forward) force. On the other hand the strong kicking of water by legs with the full opened web should produce a large up‐forward force. The combined force of these forces greatly exceeds over the teal's weight, so it is able to fly out from the water surface at a breath. The kicking by the legs is indispensable to stand up the body and to take the balance of the moments.
(Prod. Oct. 2009, scale 1/2, No.1)