The birth of the yet-to-be-named male calf marks a milestone for conservationists trying to save the critically endangered species
Read more: https://www.smithsonianmag.com/smart-news/baby-black-rhino-born-michigan-zoo-christmas-eve-180973864/?utm_source=smithsoniandaily&utm_medium=email&utm_campaign=20191227-daily-responsive&spMailingID=41430539&spUserID=NzQwNDU2MjA3OTES1&spJobID=1662464573&spReportId=MTY2MjQ2NDU3MwS2