You can read more about the crane husband on the Washington Post: The Crane Who Fell in Love With a Human! But this post summarizes the highlights of the article very well. There’s also a video about the crane that fell for her zoo keeper below:
And here is the video from Washington Post. Chris Crowe, an animal keeper at the Smithsonian Conservation Biology Institute, has discovered a new way to grow the population of endangered white-naped cranes: