Richard Bach. The Seagull named Jonathan Livingston (№ 12206)

He stood on the sand and fell to wondering if there was a gull back there who might be struggling to break out of his limits, to see the meaning of flight beyond a way of travel to get a breadcrumb from a rowboat.
He stood on the sand and thought: what if there on the Ground, is the Seagull, which is trying to escape from the shackles of his nature, tries to understand what can give the wings a fly to fishing boat and grab a crust of bread...