764-3658 - Swift fox (Vulpes velox) vixen nursing her four kits at their den, Pawnee National Grassland, Colorado, United States of America, North America
764-3649 - Thirteen-lined ground squirrel (Citellus tridecemlineatus) feeding, Pawnee National Grassland, Colorado, United States of America, North America
764-3648 - Thirteen-lined ground squirrel (Citellus tridecemlineatus) feeding, Pawnee National Grassland, Colorado, United States of America, North America
764-3605 - Thirteen-lined ground Squirrel (Citellus tridecemlineatus) feeding, Pawnee National Grassland, Colorado, United States of America, North America