Sooty Grouse - Cypress Mountain Lodge, BC
One of the resident Grouse we have here in the mountains above Vancouver are Sooty Grouse. These birds were split some time ago in to the Sooty and Dusky grouse, where they were once all called Blue Grouse. The males of this species use a very low frequency booming as a mating call which can be heard in the spring coming from several locations up the mountain. The low frequency carries longer distances so the females can hear a potential mate from several mountains over. this was on the lower slopes of Cypress Mountain, just above the lodge.