"鸟窝"用英语称为"bird nest"。

来源：这个词是由 "bird"（鸟）和 "nest"（巢）两个单词组合而成。在英语中，"nest"一词本身就是指鸟儿的巢穴。

例句：

The sparrow built its nest in the eaves of the house. (麻雀在房子的屋檐上建了巢。)
The babies hatched from their eggs in the nest. (鸟蛋在巢里孵出幼崽。)
I found a nest of eggs in the bushes. (我在灌木丛中发现了一个鸟蛋巢。)