Dusky Grouse

Formerly called "Blue Grouse," the Rocky Mountain population is now known as Dusky Grouse. The Pacific coast population is known as Sooty Grouse [September; Yellowstone National Park, Wyoming]

Formerly called "Blue Grouse," the Rocky Mountain population is now known as Dusky Grouse. The Pacific coast population is known as Sooty Grouse [September; Yellowstone National Park, Wyoming]

Formerly called "Blue Grouse," the Rocky Mountain population is now known as Dusky Grouse. The Pacific coast population is known as Sooty Grouse [September; Yellowstone National Park, Wyoming]

Formerly called "Blue Grouse," the Rocky Mountain population is now known as Dusky Grouse. The Pacific coast population is known as Sooty Grouse [September; Yellowstone National Park, Wyoming]

Formerly called "Blue Grouse," the Rocky Mountain population is now known as Dusky Grouse. The Pacific coast population is known as Sooty Grouse [September; Yellowstone National Park, Wyoming]

Formerly called "Blue Grouse," the Rocky Mountain population is now known as Dusky Grouse. The Pacific coast population is known as Sooty Grouse [September; Yellowstone National Park, Wyoming]

Formerly called "Blue Grouse," the Rocky Mountain population is now known as Dusky Grouse. The Pacific coast population is known as Sooty Grouse [September; Yellowstone National Park, Wyoming]