This is the story of how Bill the penguin and his offspring developed the ability to fly through natural selection as their climate changed.
It all started when the penguins started laying five eggs at once instead of just one. All these eggs then hatched and there was tons of baby penguins roaming around.
Along came Bill. Bill had the ability fly. This was because most penguins wings are only good for swimming but Bill was born with what most birds have which is a muscle in their shoulder that allows them to flap their wings for thrust. (Structural Adaptation)
The ice of Antarctica where the penguins live all melt and the penguins that can't fly must swim and are stranded on little blocks of ice.
Where did our ice go?!!!!!
All the penguins born with out the adaptation to fly were t the whim of the predators and were picked off one by one until the flightless penguin species went extinct.
All the penguins that were born with the adaptation to fly are now living on a tropical island living it up and Bill and his offspring lived happily ever after.