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Breeding species encountered were the mallard, black duck, blue-winged 
teal, wood duck, hooded merganser, Canada goose, and coot, in order of importance. 
The blue-winged teal, r.allard, and wood duck were the most important nesting water- 
fowl on study areas in northern Indiana, Blue-wings made up 49 percent of the nesting 
population of these areas. 
Weather had no apparent effect on nesting but retarded migration of non- 
breeviers. The excess of water, which flooded potholes, came in April, thus lessening 
danger from flooding. It may have been a factor in holding coot to nest. In general, 
water conditions were very favorable to nesting waterfowl. 
The first wood duck brood hatched about April 16. 
No summer banding was done, 
The number of adult wood ducks per linear mile of stream ranged from 0.2 
to 3.4, with an average of 1.2. Ducks per square mile on study areas ranged from 
0 to 17.5, as compared with a range from 0 to 23 in 1949. Brood production was 
identical with that of 1949. Coot showed a marked increase over 1949 on study areas. 
