From the webpage of Wyoming Migration Initiative.......
April 2nd 2017 - Update
Yesterday the folks over at County10.com
developed and ran an April Fools' joke about kangaroos being introduced into Wyoming. And we played along. Kangaroos were NOT introduced into Wyoming yesterday, nor should they ever be. Many of you were shocked to hear of this development and warned of the ecological consequences of adding an exotic mammal (especially a prolific one) to Wyoming's native fauna. We appreciate your outrage. Indeed, there is a well documented record of the detrimental effects that the introduction of species like Norwegian rats, the brown tree snake, European starlings, and wild pigs (just to name a few) have had on native ecosystems.