The ugly duckling

How much time did the mother duck wait for her eggs to hatch?

How did the other birds treat the ugly duckling on the farm?

How did the mother duck check if the last one was a duckling or not?

What happened by the swamp?

How was one of the eggs different from all the other ones?

How did the ugly duckling change after the winter?

Who did the ugly duckling see in the sky by the lake?

Where did the ugly duckling go after the swamp? How was he treated in that new place?

How was the last "duckling" different from all his brothers and sisters?

What was the old duck's idea about the last egg that hadn't hatched?