30 
Percent 


May 20 June 19 July 19 Aug. 18 Sept. 17 Oct. 17 Nov. 16 
(9.6 broods 
per sq. mile) 
(11.9 broods 
per sq. mile) 
(13.7 broods 
per sq. mile) 
(14.0 broods 
per sd. mile) 
Figure 14.--BLUE-WINGED TEAL: FLIGHTLESS BROODS, EXPRESSED AS A 
PERCENTAGE OF ALL BLUE-WINGED TEAL BROODS PRODUCED, 
[See text for explanation of these graphs] 
1950-53 
