"But when it comes to courtship, bald eagles put the wild in wildlife. The maneuver above—known as the cartwheel display or death spiral—is chief among their “spectacular courtship rituals,” says wildlife ecologist David Buehler of the University of Tennessee. “The two soar up to high altitude, lock talons, and tumble and cartwheel toward Earth.” They let go before reaching the ground—except when they don’t. In 2014 two adult eagles, talons locked, were found tangled in a Portland, Oregon, tree.