我在老橡树上发现了一个鸟巢。

I found a bird's ___nest in the old oak tree.

鹰在悬崖边上精心建造了它的巢。

The eagle carefully constructed its ___nest on the cliff edge.

许多昆虫，如黄蜂，用咀嚼过的木浆建造纸状的巢。

Many insects, such as wasps, build paper-like ___nests from chewed wood pulp.