Smithsonian Report. 1940. — Gabrielson 



Plate 1 



Trumpeter swan. 



Once faced with extinction, tlie trumpeter swan population in this country has now reached the optimistic 

 figure of 199 individuals, all of them concentrated on the Ked Kocks Miairatory Waterfowl Refuge in 

 Montana and in Yellowstone National Park, Wyo. Photograph by I'. S. Biological Survey, 



