01 Successful hunting (annkelliott) Tags: winter food snow canada bird nature field birds rodent feeding outdoor hunting greatgreyowl alberta owl prey ontheground greatgrayowl predator ornithology avian birdofprey snowcovered frontview strix strigiformes strixnebulosa strigidae annkelliott allrightsreserved anneelliott nwofcalgary fz200 caughtameadowvole fz2003 anneelliott2016 28february2016