(BIRDS/CUTE ANIMAL VIDEOS) In this heartwarming video, witness the sweet story of Walnut, a rare white-naped crane who lives at the Smithsonian Conservation Biology Institute in Virginia. At age 24, Walnut had yet to reproduce offspring and was suspected to have killed two male cranes when they attempted to mate with her. Eventually it became clear–through mating dances and other behavior–that Walnut had developed a crush on her handler, Chris Crowe. Over the past decade, the animal keeper has pretended to be her “husband,” as he’s discovered a new way to help the population of these endangered cranes. — Global Animal