But by tracking wild ducks in aeroplanes, researchers have discovered that most of them are endurance flying machines. They can take off directly from the water and do not need a runway to get their speed up.
至於野鴨，研究人員藉著飛機跟蹤，發現大部份野鴨都是耐久型的飛行器，他們可直接由水面飛向空中，不需跑道滑行。