
Table 34. Seasonal Changes in Mallard Age Ratios as a Whole 
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e Ratio  —_— 
Numbers of Inmatures per Adult 
Period Immatures Adults Observed Weighted 
Oct. 7-13 610 391 1. 56 1.65 
14-20 157 128 1.23 1. 16 
21-27 121 117 1. 03 0.77 
Oct. 28-Nov. 3 136 211 0.64 0.60 
Nove 4-10 273 326 0.84 9.85 
11-17 123 196 0.63 0. 61 
18-24 58 73 0.79 0.78 
Nov. 25-Dece 1 149 240 0.62 Q. 62 
Dec. 2-8 147 212 0.69 0.69 
9-15 63 152 0.41 0.41 
16-22 73 190 0.38 0. 38 
23-29 54 101 0.53 0.53 
Dec. 30-Jan. 8 53 155 0.34 0. 34 
TOTAL 2,017 2,492 0.81 0.77 

=~82- 
