Between the cross-talk, Stankevitz’s ears pick up a new sound: the looping arpeggio of two sandhill cranes vocalizing together. It’s a unison call, used to strengthen the bond between mating pairs and ...

One of the most graceful birds on Earth is the sandhill crane. These tall, slate gray birds with a bright red cap breed in the open grasslands, wetlands and prairies of northern North America. They ...