This is Penny the pink waddling duck. Penny and her friends are going to show us the process of natural selection.
Penny and her friends have had a sudden urge to reproduce in large quantities. So, they have decided to make lots and lots of baby ducks. This will then play a role in how many die off and how many survive, due to each trait passed down from the parents.
We are going to focus on Penny, her husband Pete, and their friends that are also married. After reproducing in mass amounts, Penny and Pete noticed that some of their pink offspring are smaller due to Penny's trait of being a small duck. The couple though nothing of it and continued to live happily for the time being.
THE END / OVERALL ADAPTION
As generations passed on, it became noticeable that the pink ducks from Penny's original traits hadn't survived, with the exception of a few, and the yellow, larger ducks had. This is because the yellow ducks are to large fr predators to eat. Predators, such as the owl, found it much easier to eat and pick up the smaller, pink ducks.
Years later, the pink, smaller ducks had almost completely died off and all that was left was the large, yellow ducks.
Many generations later, the pink ducks have completely died off and there are still predators that will go after ducks, but they aren't a priority target now due to their size. The ducks will continue to reproduce like this within each generation because of this outcome.