The scientific name for a snowy owl is Bubo scandiacus.Unlike most owls which are nocturnal snowy owls are diurnal they hunt and are active both day and night. Size relative to a 6-ft man: These large owls breed on the Arctic tundra, where females lay a clutch of 3 to 11 eggs. Snowy owls nest all across the Arctic in Alaska, Canada, Greenland, Scandinavia, and Russia. their total world population was about 300,000. However, their numbers drop year to year, falling with changes in food supply and other factors, and they probably have declined overall in the last century. Snowy owls mainly eat mammals ranging from small rodents to large hares. They are also known to eat birds ranging in size from small songbirds to medium-sized geese and lemmings. An adult owl may eat around 1,600 per year.