Roxie Laybourne and Carla Dove Holding Black Vulture Remains, by Unknown, September 1996, Smithsonian Archives - History Div, Roxie Laybourne (left) and Carla Dove (right) stand behind a counter in the Bird Division of the National Museum of Natural History. Carla Dove is holding a study skin of a black vulture while Roxie Laybourne holds a feather near the breast of the bird. On the counter in front of them are boxes of feathers and bird remains, a letter, a black wing, and a stack of open envelopes..