It's much more fun, I think, to chase after butterflies, climb trees, and steal birds' nests.

我认为，追逐蝴蝶、爬树和偷鸟窝更有趣。

youdao

The cuckoo lays its eggs in other birds' nests.

杜鹃在其他鸟的巢中产蛋。

《牛津词典》

It is best to stifle curiosity and leave birds' nests alone.

最好忍住好奇心，别碰鸟巢。

《柯林斯英汉双解大词典》

Non-native animals like rats, cats and mongooses kill flightless birds and raid nests.

VOA: special.2009.05.12

Birds build nests out of sticks to hold their eggs and baby birds.

VOA: special.2010.03.28

In addition, with cuckoos laying their eggs in other birds nests, there may be issues with their key hosts, such as the meadow pipit and dunnock, being in decline.

BBC: Cuckoo's call becomes rarer in UK

Large sections of beaches are fenced off for months to safeguard the birds' nests.

WSJ: Wrecked Beaches Could Aid Plovers

Schwab and Fidelity are acting rather like cuckoos that borrow other birds' nests.

FORBES: Magazine Article