Blue hour grizzly bear walks in river riffles looking for salmon fish

ursus arctos horribilis brown bear ursus alaska bear grizzly bella coola british columbia wildlife ecotourism canada riverbank fauna omnivore walk mammal animal wilderness carnivore environment wild male cautious river ecology solitary predator lone salmon nature danger habitat arctos horribilis fur fish riffle strength look behavior blue hour claw strong powerful behaviour autumn forest nervous bank