What is the name of the north American Swan the heaviest living bird native to North America that became almost extinct in the 1930’s but has since recovered significantly?
Trumpeter swan the park which have not mated in years. Scientists attribute the loss in the park's population to the loss of nests and nesting sites because of spring flooding caused by climate change. Trumpeter swan The trumpeter swan ("Cygnus buccinator") is a species of swan found in North America. The heaviest living bird native to North America, it is also the largest extant species of waterfowl with a wingspan that may exceed . It is the American counterpart and a close relative of the whooper swan ("Cygnus cygnus") of Eurasia, and even has been considered the same species by some authorities.
North American Bird Phenology Program is located at Patuxent Wildlife Research Center in Beltsville, MD. To contact us, Phone: (301) 497-5745 Physical Address: United States Geological Survey Patuxent Wildlife Research Center BARC-East, Bldg. 308- RM 105 Mailing Address: Patuxent Wildlife Research Center BARC-East, Bldg. 308- RM 105 10300 Baltimore Avenue Beltsville, MD 20705 North American Bird Phenology Program The North American Bird Phenology Program houses a unique and largely forgotten collection of six million Migration Observer Cards that illuminate migration patterns and population status of the birds of North America. These handwritten cards contain almost all of what was known of bird distribution and natural