| Both horses were ugly ducklings but Best Mate has blossomed into a beautiful specimen of a racehorse. |
| The ducklings were also shown pictures of a fox baring its teeth, but were less worried when shown a picture of a fox with its mouth closed. |
| Swans competing for territory, herons being mobbed by crows and ducklings jumping for flies. |
| Most of you probably view them as benign creatures of great beauty, those wondrous entities into which ugly ducklings grow. |
| Both exonogous and endogonous stimuli play a part in turning ugly ducklings into black swans. |
| In one case, a female Steller's eider was killed by a snowy owl, after which her ducklings were adopted into a nearby brood. |
