On a warm fall day in eastern Nebraska, I met up with wildlife biologist Bethany Ostrom of the Crane Trust. As we talked, we took a long walk along the banks of the Platte River, watching as small grasshoppers by the hundreds boiled out from under our feet like popcorn, listening to meadowlarks and bobolinks calling from the scrubby brush along the river.

The Crane Trust monitors the health and welfare of North America’s population of both migratory sandhill cranes, which number in the hundreds of thousands, as well as the highly endangered whooping cranes, which number less than a thousand in the entire migratory population.

The health of the crane population is a bellwether for other species, and underlines the importance of the work done by Bethany and her colleagues.