Each spring over 1,000,000 Sandhill Cranes migrate from their wintering grounds in Texas, Oklahoma, New Mexico, Arizona, and Mexico to a "staging area" on the Platte River in Nebraska. When cranes group together in such large numbers, they fill the air with their rolling calls that can be heard for miles. This Night Hike Sound Card, designed exclusively for Audubon's Rowe Sanctuary, allows you to share that magnificent sound with all your friends. Designed by Catherine Worley, based on photography by Marti Phillips, submitted in the 2021 Audubon Photography Awards. The inside of the card is blank so you can add your own greeting.