This video is called Snowy Owl (Bubo scandiacus).
From the Cornell Lab of Ornithology in the USA today:
A Snowy Owl Sequel?
They’re baaacck…reports of Snowy Owls are lighting up the eBird maps across the northern United States again this winter. Is this another irruption, or an echo flight? Read the latest with analysis from an eBird project leader at our All About Birds blog.