The Vain Jackdaw
A jackdaw, as vain and conceited as a jackdaw could be, picked up the feathers which some peacock had shed, stuck them amongst his own, and despising his old companions, introduced himself with the greatest assurance into a flock of those beautiful birds. They instantly detected the intruder, stripped him of his borrowed plumes, fell upon him with their beaks, and sent him about his business.
The unlucky jackdaw, sorely punished and deeply sorrowing, returned to his former companions, and would have flocked with them again as if nothing had happened. But they, recollecting what airs he had given himself, drummed him out of their society.
One of those whom he had so lately despised lectured him: "Had you been contented with what nature made you, you would have escaped the chastisement of your betters and also the contempt of your peers."