But how still more wonderful is it when the bird, after its voyage of thousands of miles has been performed, and new lands visited, returns to the precise window or eaves where, the summer before, it first enjoyed existence!

可是当鸟儿在飞行了上千里，在新家过冬后，依然能准确地飞回前一年夏天出生的那个窗户或屋檐，这是多么奇妙啊！