EIDER DUCK. 353 



extent of wings 39 ; wing from flexure 11^ ; tail 4 ; bill 3^\ ; tarsus If ; 

 middle toe 2j\,, its claw AJ. Weight in winter 4 lb. 4^ oz. ; in breeding 

 time 3 lb. 12 oz. 



The down of the female is light grey ; that of the male on the white 

 parts is pure white, on the dark, greyish-white. 



I have represented three of these birds in a state of irritation. A 

 mated pair, having a few eggs already laid, have been approached by a 

 single male, and are in the act of driving off the intruder, who, to facili- 

 tate his retreat, is lashing his antagonists with his wings. 



VOL. III. 



