English: Three examples of Mississippian culture avian themed repoussé copper plates. The righthand figure is one of the Spiro plates from Spiro Mounds in Oklahoma. The left hand figure is Wulfing plate A, one of Wulfing cache from Malden, Missouri. The middle plate is Rogan plate 1, from Etowah Mounds in Georgia. Examples of this type of artwork have been found as artifacts in many states throughout the Midwest and Southeast.