鳥は巣作りをする。の英語

Birds build nests.

Birds build nests.

A bird builds （a nest）

A bird builds （its nest）.

A bird builds a nest.

of a bird, to stay in the nest to incubate eggs

A bird builds （its nest） in a tree.

Birds roost―go to roost―fly home to roost.

gather birdnests

hunting for birds' nests to get the eggs

a bird that has built (or is building) a nest

A hen broods―sits （on eggs）―incubates.

The young birds leave the nest.

Birds sing.

Let the bird fly away.

The birds are flying around.

The bird are flying around.

Birds disturb the soil.

The birds pecked grains.

Birds sing.

Birds sing.

set a bird free from a cage

to go bird-nesting

Bird is singing.

to catch a bird with a limestick―lime a bird

Birds lay eggs.

A bird roosts―goes to roost.

Birds sing.

Let the bird fly away!

Set the bird free!