Male Ruffed Grouse, Bonasa umbellus, grouse, ruffed grouse, ruff grouse, ruffed grouses, grouses, gamebird, bird, birds, male, display, behavior, mating, mating display, territorial display, mating behavior, horizontal, action, wing, wildlife, woodland, North America, Pacific Northwest, Olympic National Park, Olympic Rain Forest, rainforest, Olympic Peninsula, Washington, drumming, drum, communicate, communication, communicating