Cock-a-doodle-doo!crows the cockerel as he wakes up. But Busy Tractor has already started work for the day.There is plenty to do on Warner's Farm.When Busy Tractor returns to the barn for a well-earned rest,he finds someone else who wants to sleep,too!Cock-a-doodle-doo!crows the cockerel as he wakes up. But Busy Tractor has already started work for the day.There is plenty to do on Warner's Farm.When Busy Tractor returns to the barn for a well-earned rest,he finds someone else who wants to sleep,too!