LIFE HISTORIES OF NORTH AMERICAN WILD FOWL. 239 



Wilson, Alexander. 



1832— American Ornithology. 

 WiTHERBY, Harry F'orbes, and Others. 



1920— A Practical Handbook of British Birds. 

 WoRMALD, Hugh. 



1910 — ^The ('ourtship of the Mallard and Other Dvicke. liritiBh Birds, vol. 4, 

 pp. 2-7. 

 Wright, Horace Winslow. 



1910--Some Rare Wild Ducks Wintering at Boston, Massachusetts, 1!;0<J-1910. 



The Aiik, vol. 27, pp. 390-40S. 

 1911 — ^The Birds of the Jefferson Region in the White Mountains New Hamp- 

 shire. Proceedings of the Manchester Institute of Arts and Sciences, 

 vol. 5, pt. 1. 

 Yarrell, William. 



1871 — History of British Birds. Fourth Edition, 1871-85. Revised and enlarged 

 by Alfred Newton and Howard Saunders. 

 YoRKE, F. Henry. 



1891— Green-Wing Teal Shooting. The American Field, vol. 35, No. 22, pp. 



533-535. 

 1899— Our Ducks. 



