70 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



1. NOKTHEIJN Lii>: i; l>i ' k. 



2. American Eiut.u Dick. Male. 



3. American Eider Duck. Female 



4. KiNd Eider Duck. 



5. American Scoter Duck. M.ilo. 



American Scoter Duck. Female. 11. Ruddy Duck. Male. 



7. White win(;kd S(()ter Duck. Male. 12. Ruddy Duck. Female. 



8. White AviNi W.I > S(()TER DUCK. Female. i:^. IMasked Duck. Male. 



9. Surf ScoTKii Duck. Male. 14. Masked Duck. Female, 

 10. Surf Scoter Duck. Fenuile. 



