This is the largest seabird in the North Atlantic with a 38 inch wingspan. I have visited Machias Seal Island for Puffin photography several times but have only seen these birds once. Like the Puffin, they are seabirds so are not frequently seen on shore except to breed. Their summer range is off the Coast of the Canadian Maritimes so I feel fortunate to have photographed this beautiful bird from Machias Seal Island. I had no idea what it was, just that it was big, beautiful and I had never seen one before!!!