Due to the increasing pressure of human populations in and around Zion, the native desert bighorn sheep were extirpated from the park in the 1950s. In the 1970s, over a dozen bighorn were reintroduced. Today, over 150 roam the east side of the park. Still a species of concern, park biologists closely monitor the health of the population in Zion. To catch a glimpse of these amazing animals is to catch a glimpse of what conservation and protection of a species can do in your national parks. NPS Photo/Jonathan Fortner
Date 16 March 2012, 14:33
Source Bighorn Sheep Lamb and Ewe
Author Zion National Park https://www.flickr.com/people/54168808@N03
Source: https://commons.wikimedia.org/wiki/File:Bighorn_Sheep_Lamb_and_Ewe_(7011367907).jpg

Desert bighorn sheep (Ovis canadensis nelsoni) is a subspecies of bighorn sheep (Ovis canadensis), that is native to the deserts of the Southwestern United States and Northwestern Mexico.