u 



BIOLOGICAL SURVEY- BULLETIN No. 26 



LH^U^n 



fTf&nf^ 



C. HART Ml':KKlA>r, < 'hirf 



DISTRIBUTION AND MIGRATION OF NORTH 



AMERICAN DUCKS, GEESE, 



AND SWANS 



BY 



LIBRARY 



NEW YORK 



BOTANICAL 



GARDEN 



W^ELLS W. COOKE 



Assislnnt, Biological Survey 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 

 1906 



