This bird is called a rock ptarmigan. It is truly amazing. It is one of three ptarmigans, the rock, the willow, and the white-tailed. In summer its feathers are brown, grey, and speckled, but in the winter it looks like this: Completely snow white. It is incredible how drastically these birds change over the course of all four seasons. In the spring they are half white, and half speckled! Their feet also adapt for the seasons, in the winter they have thick, boot-like or snow-shoe-like feathers insulating them and allowing them to walk effectively on the snow. They are mostly found in the arctic. I'm so in love.