Over the summer of 1821, a cash-strapped John James Audubon worked as a tutor at Oakley Plantation in Louisiana's rural West Feliciana Parish. This move initiated a profound change in direction for the struggling artist. Oakley's woods teemed with life, galvanizing Audubon to undertake one of the most extraordinary endeavors in the annals of art: a comprehensive pictorial record of America's birds. That summer, Audubon began what would eventually...