Equipped To Fly

A bird with wings,
And equipped to fly...
Is seldom seen,
Trying to be convinced of it.

And why would a thoroughbred,
Choose to race with an average horse?
To rehearse the practicing of what?
A waste of misplaced curiosity?

If a thing is known and established,
To be that which it is...
What is the advantage,
Of not utilizing its benefits?