In Yellowstone, Migratory Bison Reawaken a Landscape NYT | Top Stories By: Alexa Robles-Gil 3 September 2025 at 17:02 A recent study hints at the potential benefits of restoring bison to an ecosystem. © Jacob Frank/National Park ServiceBison grazing near the Roosevelt Arch of Yellowstone National Park in Gardiner, Mont. Yellowstone is home to the last migratory herd — migratory bison are otherwise functionally extinct in their former range.