Trumpeter swans primarily feed on all manner of aquatic plants and vegetation. They often feed by upending themselves in the water and using their long necks to reach underwater plants; this technique is known as “dabbling”. In the winter, trumpeter swans will also take advantage of any remaining seeds or grains left in agricultural fields, though they prefer aquatic dining. Trumpeter swans will usually continue to nest and feed at a lake, pond or river in the winter so long as food and open water remains, often sharing their habitat with much smaller Canada geese. Once suitable wintering grounds are found, trumpeter swans may continue to return to the same site each winter for life.
|Courtesy Missouri Department of Conservation|