Young great horned owl
University of South Dakota, Vermillion. At close range, a small yellow mark at the base of the bill, close to the eye, can be seen on the Tundra Swan. Mortality of Great Horned Owls associated with skunks. Young great horned owl Trumpeter Swan has a deep, resonant, brassy, trumpet-like voice; the voice of the Tundra Swan is softer and more melodious. In ptarmigans, the moult, or shedding of old feathers, starts with Young great horned owl head and progresses towards the tail. Both full-grown wild turkeys  and adult domestic turkeys  have been hunted and killed.