—_— 
ees 
DUCKS PER SQUARE MILE 
250 
225 
200. 
175 
150 
125 
100 
75 
50 
25 
233 
mt rit GROUND POPULATIONS - AVERAGE 
KS PER SQUARE MILE FOR ALL TRANSECTS 

| 
t wu 
3-28 4-13 4-21 4-27 5-2 5-9 5-17 5-24 6-14 6-28 7-12 7-26 8-9 8-23 
Dates of Survey 
