TABLE C-9, --Distribution of wintering waterfowl, Mississippi Flyway extended, 1956-61 
[Index numbers] 












































































85,157 91,066 62,998 63,501 55,754 
Minnesota----------- 5,993 33 , 754 21,322 13,302 14,577 
Wisconsin--~-------- 70,237 40,541 38 ,349 37,101 81,201 
Michigan------------ 159,701 139 , 964 106,248 142,209 50,635 
lowa-----------200-- 56,695 110,183 162,258 121,473 378,755 
Missouri ------------ 465,331 405 ,082 370,729 357 , 760 293,211 
Illinois------------ 1,538 ,460 2,117,470 604, 561 728,071 549 ,605 
Indiana----+-------- 1,045,238 518 ,160 732,720 485,136 274,093 
Ohio=------- seccee=- 141,957 170 476 50 ,841 56,119 149 ,322 
Kentucky------------ 174,359 197 ,306 241,003 245,100 67,200 
Arkansas------------ 1,350,300 1,231,800 1,674,022 1,443,900 1,282,800 
Temnessee----------- 302,100 484,439 664 ,157 585,800 360,100 
Louigiana----------- 2,332,660 2,620,500 2,823,395 3,372,000 5,462 ,000 
Mississippi--------- 247 ,173 195 ,325 161,392 118 ,600 125 ,'700 
Alabama-----=--=-.=-- 196,651 145,138 91,589 118 ,800 
peter 0 98 
Comparable coverage: 
1956-1957--------- 8,172,012 8,496,704 -- -- 
1957-1958--------- -- 8,499,859 7,720,732 -- 
1958~-1959--------- 7,805,584 7,883,372 -- 
Tes e 7,886,407 7 882,450 
es a + ae ‘al 7,925 227 9,274,495 
TABLE C-10,--Trend in waterfowl numbers, Mississippi Flyway extended, winter survey, 1949-61 
[In thousands ] 

Note.--Coverage during the period was not comparable and the data were adjusted, using 1959 and 1955 as base years. 
Tt was assumed that areas where comparable surveys were conducted provided an accurate measure of the percentage 
change between 2 consecutive years. On this basis, population estimates were calculated backward and forward from the 
base years. 
67 
: 
wif 
ae oa 
ey 
