The Ugly Duckling — Andrew Lang

It was under these burdocks that a duck had built herself a warm nest, and was not sitting all day on six pretty eggs. Five of them were white, but the sixth, which was larger than the others, was of an ugly grey colour. The duck was always puzzled about that egg, and how it came to be so different from the rest. Other birds might have thought that when the duck went down in the morning and evening to the water to stretch her legs in a good swim, some lazy mother might have been on the watch, and have popped her egg into the nest. But ducks are not clever at all, and are not quick at counting, so this duck did not worry herself about the matter, but just took care that the big egg should be as warm as the rest. This was the first set of eggs that the duck had ever laid, and, to begin with, she was very pleased and proud, and laughed at the other mothers, who were always neglecting their duties to gossip with each other or to take little extra swims besides the two in the morning and evening that were necessary for health. But at length she grew tired of sitting there all day.