翠鸟起先为了避免灾祸，总是选择高的地方筑巢。
In order to avoid calamities, at first the kingfisher always selects a high place to build its nest.
但是，等到孵出小鸟以后，它就到少许低一点儿的地方筑巢。
But when the young birds are hatched, it will move to a place a little lower to build its nest.
这是因为它特别爱护小鸟，生怕它们从高处摔下来。
This is because the kingfisher is particularly fond of its offspring and is afraid they hight fall down from a high place.
等到小鸟长出了美丽的羽毛以后，母鸟就更加喜欢和爱护它们了，
When the young birds grow beautiful feathers,the kingfisher will become even fonder of them and more protective,
于是又向下搬巢，结果小翠鸟却被人们轻而易举地掏走了。
so it will move its nest further downward, with the result that the young birds are easily taken away by people.