A feather is a heck of a thing. Yankee Doodle stuck one in his cap and called it “macaroni” almost three centuries ago. Native Americans used feathers at the end of the arrows to make them go straighter when launched from the bow. Feathers are used far and wide and during the kill-for-plumes era here in America, several plume bearers such as the egrets almost became extinct, which led to the Migratory Bird Treaty Act of 1918 in the United States, which banned almost all forms of plume hunting.