birds from a more productive area than the areas from which birds 
had come at the beginning of the season. Age ratios increased in 
both Minnesota and Wisconsin at the same time as in Iowa. 
On opening day in Illinois, the age ratio was 0.79 immature per 
adult, substantially higher than the age ratio of 0.42 for the re- 
mainder of opening week. The following week, November 4 through 10, 
age ratios increased to 0.85. Age ratios then decreased to 0.53 
during November 11 through 17, and increased to 0.80 November 18 
through December 8. 
Age ratios for Ohio were computed for only two periods because 
of the small sample size. There were 2.13 immatures per adult in 
the period of October 16 through November 20 and 1.25 immatures per 
adult during the remainder of the season. 
In Missouri, the age ratios were 0.64 immature per adult on 
opening day and 0.67 during the remainder of the week. The age 
ratio remained constant (0.41 and 0.42) during the remainder of 
the season. 
In Arkansas, the ratio was 0.74 immature per adult on opening 
day, then 0.64 immature per adult during the following four days. 
Thus, as in the data from Missouri, the age ratio on opening day was 
not substantially greater than during the remainder of the week. 
This seems to indicate that the immatures are not more vulnerable 
than adults by the time the birds reach Missouri and Arkansas. 
During the period of December 5 through 11 in Arkansas, the age 
ratio was 0.80. Age ratios during the remainder of the season were 
much lower.» 
Age ratios in Tennessee did not show the marked fluctuations 
between periods that they did in the samples from other States. 
They were highest during the first week of the seasm, 0.57 immature 
per adult. There were 0.40 immature per adult during the period 
December 7 through 20 and 0.50 immature per adult during the period 
December 21 through January 8. 
In Louisiana, age ratios were 0.70 immature per adult during 
the period November 26 through December 14 and 0.54 immature per 
adult during the remainder of the season. 
3. Variations in age ratios within States 
Examination of the age-ratio data on a county basis in four 
States having large samples revealed that in two of these there were 
pronounced differences in age ratios between portions of the same 
State. Minnesota could be divided into three zones with very 
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