Sandhill cranes congregate along the Wisconsin River in the fall

North american sandhill cranes hi-res stock photography and images - Alamy

After a slow start, sandhill crane released into the wild

Sandhill crane standing in grass hi-res stock photography and images - Alamy

500,000 Cranes Are Headed for Nebraska in One of Earth's Greatest Migrations, Science

Sauk County Sandhill Crane Viewing - Devil's Lake State Park Area Visitor's Guide

Sandhill Crane Migration Wisconsin River

Sandhill Cranes at Crex Meadows SWA - Saint Paul Audubon Society

Sandhill cranes show their ability to adapt to change

Thousands of sandhill cranes migrate through this Indiana wetland each fall: 'You can hear them before you see them' – Chicago Tribune

Sandhill cranes fill skies, wetlands and delight birdwatchers - Seymour Tribune