Michael Durham / Mountain Lion (Puma concolor) uncovers a young Elk (Cervus elephus nelsoni) calf that it killed and covered with debris earlier, Wallowa County, Oregon * tags and tracking collar on cat were digitally...

Michael Durham / Mountain Lion (Puma concolor) uncovers and feeds on a young Elk (Cervus elephus nelsoni) calf that it killed and covered with debris earlier, Oregon

Michael Durham / Mountain Lion (Puma concolor) uncovers a young Elk (Cervus elephus nelsoni) calf that it killed and covered with debris earlier, Wallowa County, Oregon * tags and tracking collar on cat were digitally...

Tom Vezo / American Black Vulture (Coragyps atratus) group feeding on carcass, Rio Grande Valley, Texas

Tom Vezo / American Black Vulture (Coragyps atratus), Crested Caracara (Caracara cheriway), and Turkey Vulture (Cathartes aura) scavenging on carcass, Rio Grande Valley, Texas

Michael Quinton / Common Raven (Corvus corax) group fighting near a carcass, Yellowstone National Park, Wyoming

Michael Quinton / Common Raven (Corvus corax) group fight over a Beaver carcass, Idaho

Tui De Roy / Laysan Albatross (Phoebastria immutabilis) mortality from plastic debris ingested at sea, Midway Atoll, Hawaii

Michael Quinton / Common Raven (Corvus corax) group fighting in the snow near a carcass, Yellowstone National Park, Wyoming

Michael Quinton / Common Raven (Corvus corax) group fighting in the snow near a carcass, Yellowstone National Park, Wyoming

Jim Brandenburg / Dead warblers, Superior National Forest, Minnesota

Thomas Mangelsen / Mountain Lion (Puma concolor) mother watching two cubs playing with Elk (Cervus elaphus) hide, Miller Butte, National Elk Refuge, Wyoming

Michael Quinton / Common Raven (Corvus corax) group feeding on an Elk (Cervus elaphus) carcass, Yellowstone National Park, Wyoming

Michael Quinton / Common Raven (Corvus corax) group fighting in the snow near a carcass, Yellowstone National Park, Wyoming