Daniel Trocola, a keeper with Raptor Free Flight, holds a Chihuahuan raven as spectators watch various birds of prey fly naturally and untethered during the Raptor Free Flight demonstration at the Arizona-Sonora Desert Museum, 2021 N. Kinney Road, on Tuesday, Nov. 12, 2013, in Tucson, Ariz. Photo by Mike Christy / Arizona Daily Star

Mike Christy / Arizona Daily Star