As temperatures drop, I am always curious about water birds' feet. I finally looked up the reason why they don't just get their feet frozen, if not very cold. You wouldn't catch me floating blissfully on the water in the winter. This pair though seems to have opted for a piece of driftwood.
Here' the reason: Birds in general have specialized scales on their feet and legs that help minimize heat loss. Many ducks, geese, pelicans, gulls and swans further conserve body heat by standing on one leg or even sitting down.
