In which Hans Christian Andersen fairytale does a swan grow up amongst ducks?

Explanation

In the fairy tale about "The Ugly Duckling", a swan is hatched amongst ducklings. Neither itself nor the characters around it know that the swan is not a duck - it is just different. It suffers much verbal and physical abuse from the other birds and animals on the farm. Only in the end of the fairy tale does Hans Christian Andersen reveal that "the ugly duckling" is a actually a tiny swan, which develops into a beatiful, grown swan. This happens when the swan approaches a group of other swans and sees his own reflection.