The snowy owl (Bubo scandiacus)is a large, white owl of the true owl family. It is the only owl that is entirely white (females are flecked with dark brown.) Unlike most owls it is active during the day. Breeding and the entire global population are closely tied to the availability of tundra dwelling lemmings. It can adapt to eating lots of other things but lemmings are of primary importance.
Snowy owls lay many eggs, usually in a nest on a small rise of ground or hummock on the tundra. They are nomadic, they don’t continue to breed at the same location or with the same mate and they wander all over the place. They are white, with bright yellow eyes. Their toes are thickly covered with white feathers and have black claws. They have excellent long range vision.

Although they are arctic birds they do migrate further south in winter and end up all over - southern Canada, Iceland, Ireland, Scotland etc.

Sometimes there are large winter irruptions, thought to be due to good breeding conditions in their home ranges. At such times they have been found as far south as Georgia, even California and Hawaii. Unusually, there was a mass migration in 2011 and 2012, when they were found all over Canada and the states.
Snowy owl’s existence is considered to be fragile, the population has dropped dramatically, possibly in response to global warming.