In the early spring, as sandhill cranes are migrating to their breeding grounds, single cranes will start pairing up. A sandhill crane pair performs unison calling to create a bond. When the pair reaches the northern breeding grounds, they mate and build a nest.
During mating, sandhill cranes perform dancing displays. Although the dancing is most common in the breeding season, the cranes can dance all year long. Sometimes the dance involves wing flapping, bowing, jumps and simply playing around. They might also throw a stick or some plants into the air. It's quite a sight!