68 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
1. GREEN-WINGED TEAL. Male. 6. SHOVELLER Duck. Male. ll. Woop Duck. Female. 
2. GREEN-WINGED TEAL. Female. 7. SHOVELLER DUCK. Female. 12, REDHEAD Duck. Male. 
3. BLUE-WINGED TEAL. Male. 8. PINTAIL DUCK. Male. 13. REDHEAD Duck. Female. 
4, BLUE-WINGED TEAL. Female. 9. PINTAIL DuCK. Female, 14. CANVAS-BACK DUCK. Male. 
5. CINNAMON TEAL. 10. Woop Duck. Male. 15. CANVAS-BACK Duck. Female. 
