Francis J. Singer

• Grazing influences on Yellowstone's northern range II
• Treatment of wild horse mares with the immunocontraceptive porcine zonae pellucida vaccine
• Behavior of mountain goats, elk and other wildlife in relation to U.S. Highway 2, Glacier National Park
• Effects of grazing by wild ungulates in Yellowstone National Park
• Effects of grazing by wild ungulates in Yellowstone National Park
• Manager's summary--ecological studies of the Pryor Mountain Wild Horse Range, 1992-1997
• Restoration of bighorn sheep metapopulations in and near 15 national parks