Grey-faced buzzard-eagle landing the nest on tree through the forest

�@When the buzzard-eagle enters into the forest, it makes use of the inertia and approaches to the nest with the steerage based on the cooperative action of wing and tail. Then, it applies the brake by the opened tail and the raising up wing, simultaneously changes the remained kinetic energy to the potential energy. It temorally stops near above the nest and makes a soft landing by making use of the spring of the legs together with flapping down of the wing. The slower flapping down using the drag on the wing is similar to a parachuting or an adversely jetting.
(Prod. Jul. 2009, scale 1/2, No.1)

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