Chris Crowe, an animal keeper for the Smithsonian, has an unlikely bond with Walnut, a female white-naped crane. Despite their obvious differences, she chose him as her mate. For Crowe, their relationship has high stakes: it impacts the future of an entire species. Venture with Sidedoor to the Smithsonian Conservation Biology Institute to meet this unconventional couple, and find out how their connection could be key to white-naped crane survival.