Roxie Laybourne, a Smithsonian bird expert, invented the science of using feathers to solve bird-related mysteries. On the Sidedoor podcast episode "The Feather Detective," we revisit some of Roxie's greatest cases and learn how she and her team helped keep the friendly skies friendly for both birds and people. Learn more about Laybourne with Smithsonian Institution Archives and hear her talk about working at the Smithsonian.