TABLE D-20. —Age ratios of mallard determined from wing collections, during 
hunting seasons 1960-61, 1962-63, and 1963-64 
Number of— 
Location of kill 
Wings received 
Immature s per adult 
1961-62 
1962-63 
1963-64 
1961-62 
1962-63 
1963-64 
Pacific Flyway: 
Washington- 
1,259 
1,739 
2,208 
1.1 
1. 0 
1. 5 
Oregon- 
656 
577 
1,129 
1.8 
1.5 
1.8 
Idaho- 
California- 
715 
679 
1,328 
734 
2,454 
1,563 
0.9 
1.5 
1.0 
1.8 
1.1 
2. 2 
Nevada- 
149 
178 
586 
1.7 
2.0 
2.2 
Utah- 
217 
708 
1,039 
2.0 
1.9 
1.9 
Arizona- 
17 
59 
82 
2.1 
2.2 
Flyway weighted ratio z - 
— 
— 
— 
1.22 
1.25 
2.2 
Central Flyway: 
Montana 3 (E)- 
599 
165 
269 
1.2 
2.1 
1.1 
(W)- 
482 
571 
662 
1.2 
1. 2 
2. 5 
North Dakota- 
531 
988 
1,360 
1.1 
1. 2 
1.1 
South Dakota - - -- 
145 
493 
1,579 
0.5 
1.0 
1.2 
Wyoming (E)- 
57 
70 
138 
1.4 
1.5 
0.8 
(W)- 
12 
352 
556 
__1 
1.1 
1.0 
Nebraska - 
1,210 
205 
736 
0.5 
0.5 
0.8 
Colorado (E)- 
840 
403 
1,255 
0.4 
0.7 
0.6 
(W)- 
101 
249 
229 
0.3 
0.8 
0.8 
Kansas-- 
509 
315 
318 
0.6 
1.0 
0.7 
New Mexico- 
140 
98 
278 
0.8 
0.8 
1.4 
Oklahoma- 
129 
204 
279 
0.7 
0.6 
1.0 
Texas - 
139 
620 
624 
0.6 
0.8 
0.8 
Flyway weighted ratio 2 - 
— 
— 
— 
0. 69 
0.94 
1.03 
Mississippi Flyway: 
Minnesota- 
768 
1,722 
2,325 
1.5 
2.2 
2.1 
Wisconsin- 
772 
1,798 
1,788 
2.0 
2.7 
2.2 
Michigan- 
450 
706 
687 
3.0 
3.2 
2.8 
Iowa-- 
560 
329 
578 
1.0 
1.6 
1.1 
Illinois- 
1,007 
549 
890 
0.8 
1.0 
1.1 
Indiana- 
210 
178 
278 
0.8 
1.1 
1.4 
Ohio-- 
197 
267 
388 
2.5 
2.2 
1.9 
Missouri- 
597 
331 
628 
1.0 
0.8 
0.9 
Kentucky- 
373 
202 
257 
0.7 
0.8 
1.2 
Arkansas - 
512 
896 
1,143 
0.5 
0.7 
0.7 
Tennessee - ~- 
503 
224 
316 
0.6 
0.8 
1.1 
Louisiana - --- 
216 
830 
965 
0.3 
0.7 
0.9 
Mississippi- 
135 
204 
298 
0.6 
0.8 
0.7 
Alabama- 
Flyway weighted ratio 2 - 
48 
188 
389 
0.7 
0.6 
1.3 
— 
— 
— 
1.08 
1.40 
1.30 
Atlantic Flyway: 
Maine- 
10 
25 
39 
__1 
7.3 
3.2 
Vermont- 
44 
42 
82 
3.0 
3.2 
5.4 
New Hampshire- 
11 
7 
11 
— 
— 
_ 
Massachusetts- 
42 
92 
85 
3.2 
1.7 
1.5 
Connecticut- 
65 
102 
100 
4.0 
2.2 
1.6 
Rhode Island- 
22 
27 
19 
3.4 
0.6 
1.4 
New York- 
343 
337 
598 
3.8 
2.1 
3.0 
Pennsylvania- 
124 
481 
667 
2.9 
2.1 
2.3 
West Virginia- 
20 
50 
59 
1.2 
1.8 
1.9 
New Jersey - 
147 
306 
337 
1.3 
1.6 
1.8 
Delaware- 
54 
104 
121 
1.1 
1.0 
1.4 
133 
