Because they rely on thermals to ascend, they can only fly between around 10 a.m. and 3 p.m. each day, and they make the best of this flying time. "They can play in the air one to two hours at a stretch," says nature photographer Lin Hsien-tang, who has been traveling the mountains of northern Taiwan alone for many years to "capture" crested serpent eagles in flight.
由於依賴氣流上升，一天當中能飛行的時間只有上午十時至下午三時左右，牠們也就特別珍惜飛行時刻，「牠們可以在空中玩上一、兩個小時，」從事生態攝影的林顯堂，常年獨自來往於北台灣山頭，「捕捉」大冠鷲的飛行姿態。