Whooper swan portrait - Cygnus cygnus. The yellow bill-spot of this swan is pointed. Photo: 1st February 2010 at Berlin Tierpark.
Copyright by Klaus Rudloff, Berlin


Comments
=======
The whooper swan (Cygnus cygnus) is a large Northern Hemisphere swan. Cygnus cygnus require large areas of water to live in, especially when they are still growing, because their body weight cannot be supported by their legs for extended periods of time. The whooper swans spend much of their time swimming, straining the water for food, or eating plants that grow on the bottom.