Home Conservation Ecology Center May 08, 2019 Tracking Bison Across the Grasslands of Montana This update was written by landscape ecologist Hila Shamon. Image: Andy Boyce Related Species: American bison Continue Exploring December 09, 2025 For Migratory Species, Fences Don’t Make Good Neighbors › Fences are creating serious problems for wildebeest herds, says a Smithsonian ecologist studying megafauna migrations in Africa. September 10, 2025 Study: Small Herbivores Have a Big Impact on Grassland Health › New Smithsonian research indicates prairie dogs and grasshoppers have some of the largest impacts on grassland nutrient cycles. June 12, 2025 Study: When Prairie Dogs Call, Birds Are Eavesdropping › Some birds listen in on prairie dog alarm calls to learn when predators are close, according to a new study from our grassland science team.