Cuckoo Song

What do you do?

In April, I open my bill
In May, I sing night and day
In June, I change my tune
In July, far off I fly
In August, away
I must

What do you do?

In April, I open my bill
In May, I sing night and day
In June, I change my tune
In July, far off I fly
In August, away
I must

What do you do?

In April, I open my bill
In May, I sing night and day
In June, I change my tune
In July, far off I fly
In August, away
I must