The Sandhill Crane’s call is a loud, rolling, trumpeting sound whose unique tone is a product of anatomy: Sandhill Cranes have long tracheas (windpipes) that coil into the sternum and help the sound develop a lower pitch and harmonics that add richness. Sound on! 🔊The unique sound of many cranes calling at the same can be heard in this video captured on 12/29/2022. Video of sandhill cranes flying over a wetland in the refuge waterfowl sanctuary by Angela van Winden/USFWS. | Muscatatuck National