239 
Summary 
In conclusion we might summarize the 1952 data as follows: 
1, Water levels were quite normal on the Chippewa area in 1952 and 
weather conditions were very satisfactory for a successful nesting season. 
Water levels were such that censusing of the Chippewa area should have been 
accurate. 
2. The fact that no dog was used during the 1952 census makes comparison 
with previous census data quite difficult. Certain census areas are easily censused 
without the aid of a trained dog but on some of the areas escape cover is so 
abundant as to make the use of a good dog imperative. 
3. Raw data indicates a 32 percent decrease in duck population from the 
"par" of 1939-1940 and a 23 percent decrease from 1951. It is very possible 
that the 1952 duck population was about the same as that of 1951. 
4. During 1952 there was little change in species composition from previous 
years, 
5. Brood averages are very close to normal for the area but more juveniles 
were seen per adult than in most previous years indicating a better than average 
breeding success. 
