The ducklings are only twenty four hours old. 小鸳鸯才24个小时大

142. The mandarin ducks are courting.
     鸳鸯正在示爱
143. The female mandarin nests in a tree hole
     雌鸳鸯在树上筑巢
144. and when it's time for everyone to leave she leads the way.
     她正在带着所有的宝宝们离开巢穴
145. The ducklings are only twenty four hours old.
     小鸳鸯才24个小时大
146. It's a long drop, and a few calls of encouragement are required.
     要让它们从这么高的地方落下 妈妈鼓励的叫声是必须的
147. Two down seven to go.
     2只降落,还有7只
148. There are still two missing.
     还少着2只

来自《行星地球 第一季 第十集 Planet Earth S01E10 季节森林》第 145 行