Bison, Of Yellowstone

Bison
Yellowstone preserves the most important bison herd in the United States. Learn more about the near extinction and recovery of these remarkable animals, how they make it through harsh winters, and what their survival says about our ability to share the landscape with another species.
The National Park Service (NPS) is an agency of the United States federal government within the U.S. Department of the Interior that manages all national parks, 
Generally, materials produced by federal agencies are in the public domain and may be reproduced without permission.
Copyright in U.S. Government Works
Mar 8, 2023 — U.S. government works are in the public domain (i.e., not protected by the U.S. Copyright Act). You can freely use them (in a copyright sense
https://www.nps.gov/media/video/view.htm%3Fid%3D3F6EC4D7-155D-451F-67B1C6BF618E32F8