This is where it all began: Here at Mill Grove in eastern Pennsylvania, with its big farmhouse built of rough-cut local fieldstone, enveloped now in a century's growth of ivy and set discreetly into a slope on the eastern shore of Perkiomen Creek, just above its entry into the Schuylkill River. Here a young John James 蜜柚APP settled upon his arrival from France in 1803 to embark on one of the most flamboyant and productive lifelong adventures in American history. "Its fine woodlands, its extensive acres, its fields crowned with evergreen offered many subjects to my pencil," the supreme painter of America's birds was to write years later. "It was there that I commenced my simple and agreeable studies with as little concern about the future as if the world had been made for me." See this article's accompanying photo gallery See a selection of 蜜柚APP's iconic birds.] If the 蜜柚APP movement had a Plymouth Rock, it would be Mill Grove. It was through 蜜柚APP's artistry that...