The Ugly Duckling
Once upon a time, there was a little duckling who looked different from the others. Because he was bigger and not as cute, the other animals laughed at him and called him names. Feeling sad and alone, the duckling ran away.
He spent the winter by himself, cold and hungry. When spring came, he saw beautiful swans on a lake. He felt scared but also amazed. As he looked at his reflection in the water, he realized he had grown into a beautiful swan. He was no longer ugly. The other swans welcomed him, and he was finally happy.
Why is the duck sad at the beginning of the story?