MISSISSIPPI FLYWAY 
Table - Continued - 
Average of 

1951 - 1955 1955 (1956 
Adult Coot Observed Per Acre 05 | 08 | 08 
Percent Change of 1956 + 60 igre aes 
Note: Total estimated pairs based on pairs, lone males, lone females, and 
unidentified duck pairs and single: ducks observed. Index. figures are 
. based on the number of pairs per acre sampled. 
Production Indices - 
The table presented below contains the pertinent figures on the 1956 
Wisconsin waterfowl] production survey together with similar data from. ee 
through 1955 for comparative purposes. 
Of Total Yng. / Ave. - Percent Duck. 
Flocked Ducks, Breed- Indicated Brood Indicated Pairs on Brood 
Year Percent F. ing Pair Change Size Change _ Surveys* - 
1951 16% 1.46 655 - 43 
1952 19% 2.58 +77% . 6.6 + 2% 42. 
1953 av °. =e BS - 9% 7.0 + 6% 39 
1954 35% 1,51 -36% 7.0 None 41 
1955 18% 1.85 +23% 7.4 + 6% 47 
1956 26% 1.53 -17% 7.0 - 5% 43 
: 
. ¥ . 5 = % 
. a 
*E ach duck pair is considered to represent a potential brood 
which may appear after the brood’ survey is completed, The 
percentage figure given was computed by dividing the total 
number of adult ducks observed on the June survey into the 
total estimated number of. pairs on that.survey. 
Conclusions - 
When considering that (1) walter jodie on the census sites remained high. 
to aid observers in seeing broods (2) duck pairs observed per acre of water 
censused was about 25 percent greater than in 1955 and 50 percent greater than 
the five-year average, probably due to the presence of late migrants (3) the 
number of females observed in flocked ducks increased over 1955 and (4). the 
average number of young per breeding pair and the average brood size both 
decreased in 1956, it is concluded that the 1956 waterfowl production will be 
about the same or slightly below both the 1955 level and the five-year average. 
77 
