When the young eagle's wings become sufficiently stiff, it begins to continually flap them in the nest to strengthen its wing muscles, then unsteadily leaves the nest and practices flapping while gripping a branch. After that, it practices short hops and jumps, gradually increasing their length, until it finally takes the plunge and makes its first short flight through the forest.
當幼鳥羽翼初硬，便在巢中不時練習拍翅，加強翅膀力度，進而危危顫顫離巢，抓住樹枝練習拍翅，再練習短距離跳躍，之後慢慢擴大範圍，最後放手一搏，在林間短距離飛行。