There once was a school for animals.
They taught running, climbing, flying and swimming.
The duck loved school and excelled in the swimming class. He did ok in the flying class but not so good in running and climbing.
To help the duck they took him out of swimming class (since he already had that down pat) and gave him a more expansive running, climbing and flying curriculum.
Eventually the duck became a worse swimmer, an ok flyer and a frustrated mediocre runner and climber.
The eagle enrolled and absolutely excelled at climbing and flying. He looked forward to school every day. The instructors were not pleased because he never climbed the way they told him to (although he always got to the top) so they took him out of flying class so he could focus on the proper way to climb. They also upped his running and swimming classes to make him well rounded. The eagle eventually rebelled, climbed to the highest tree branch and dropped out of school.
The turtle enrolled but he wasn't good at running, climbing, flying or swimming. After 10 sessions of therapy the counselors decided they had figured out the problem: his shell. The shell was obviously holding him back so they removed it and he improved for a while until the horse stepped on him.
The rabbit loved running, he was best in his class. He ran to school every day and even encouraged the school to start a jumping curriculum after school that he could teach, but they declined because really…how useful is jumping? At any rate, the rabbit was removed from the running classes because the other student felt intimidated and he was encouraged to work harder at climbing, flying and swimming so he could improve. The other students felt much better about the rabbit now that they had a chance to be the better one at running. The rabbit had a nervous breakdown.
The moral of the story?
This duck's gonna swim.