Maybe it was the birds.

也许是鸟吃掉了。

The birds are flying away.

鸟儿正在飞走。

Look at the birds up in the sky!

看天上的鸟！

The birds are singing in the tree.

鸟儿在树上唱歌。

Will you feed the birds, please?

你能喂鸟吗？

The birds had eaten all the plants.

鸟儿吃光了所有的植物。

The birds still hopping on the tree.

鸟儿仍在树上跳跃。

The birds are flying madly to her.

鸟儿疯狂地飞向她。

She watched him stalking the birds.

她看着他悄悄接近那些鸟。

Many people came to watch the birds.

许多人来看这些鸟。