animals Australian bad-tempered black captive captive-breeding carnivorous carrion-feeder competitive devils endangered ferocious-feeder incredibly-fierce-appearance large-broad-head loud mammal marsupials muscular nocturnal Noisy powerful powerful-jaws protected pungent-odour rotund sarcophilus-harrisii scavenger screeching short-thick-tail spine-chilling-screeches squat-build stocky tasmania Tasmanian-devils thick-set vocalisations animal beak bird birds brown eye eyes feather hunt hunter hunting natural nature night outdoors owl portrait preditor prey screech sharp stare watch wild wildlife aggressive chroicocephalus novaehollandiae common gray and white grey and white gulls Larus novaehollandiae prolific resting river river's edge riverside sand scavengers seagulls sepia silver gull standing wading waiting watching call claw cry England falconer female gauntlet glove Great Britain hiss Nyctea scandiaca perch predator raptor rest scream sit snowy owl Sussex tame white yellow eye background barn bubo card close face falcon feathers flight gray great hawk orange red south UP yellow young