The birth of a wild bison calf has renewed hopes of rebuilding sustainable herds.

“There are numerous studies that show the impact bison recovery has for an ecosystem— all the way down to dung beetles, bird species, prairie dogs and carnivores,” said Adams. “Bison affect the entire ecosystem from microbes to insects to mammals and humans.”
https://www.theguardian.com/environment/2020/may/01/the-bison-calf-taking-the-first-step-to-rewild-the-canadian-prairies