I like listening to the birds call every morning.

The sheep are baaing on top of the mountain.

The sheep was quietly eating grass.

He is raising a sheep.

He looked at the flock of sheep and felt at ease.

As the phrase 'If it does not sing, let's wait until the cuckoo sings' suggests, we should wait patiently until the opportunity comes.

He is still in a state of not yet having a success for a long time.

Recently, this store has become so quiet that you can hear a pin drop.

She was hugging a lamb.

He was holding a lamb.