126 
Conclusion 

The 1952 season has been a successful breeding season, and while the 
population has not yet reached the high of 1949, all species show an increase over 
last year with the exception of the two species of teal. The black duck population 
is the highest that has been recorded since this survey began in 1945. The 
American goldeneyes appear to be recovering from their low of 1950 and this is 
their second year of increase. The green-winged and blue-winged teal have 
decreased again after their slight upward swing of last year. There is a slight 
increase in wood duck and ring-necked ducks over last year. 
The breeding season was very successful with blacks, blue -winged teal, 
and wood duck showing a decrease in brood mortality with a consequent increase 
in brood size. 
