19S4.— Beak of Canv«s-back Dnck. 



1987— Bill of Spirit-Duck. 



1991.— KU of Ung-tailed Duck. 



1985.— Spirit-Dock: Male. 



1988.— Long-Uiled Duck: Male. 





1986.— Spirit-Duck: Female. 



1989.— Long-Uiled Duck : Female. 





198:*.— CtnvaA-back Duck, 





No. 57. — ^o'" " 





1 992.— Steamer-Duck. 



[THE MUSEUM OF ANIMATED NATURE.] 



1990 Long-tailed Duck Male. 



49 



