oa) ~ aoe cmp 
MISSISSIPPI FLYWAY 
Conclusions - 
Based on the number of nesting attempts observed per square mile 
of lake and marsh, and per mile of stream, a downward trend has been 
recorded. In view of this trend, it is estimated that Missouri will 
produce somewhat fewer ducks than a year ago. 
IOWA 
Water and Weather Conditions - 
Iowa experienced extremely warm weather in early April and 
unusually cold, freezing weather in early May. 
Breeding Population Indices - 
Special emphasis has been placed upon the study of the wood duck 
because it has again become an important nester during the last fifteen 
years, and Iowa's contribution to the over-all production of this species 
is important within the flyway. This State is reputed to contain from 
11,000 to 16,000 miles of stream and rough estimates from stream 
surveys indicated about one pair of wood ducks to every two to four 
miles of good stream habitat in 1953. In 1954 both stream survey data. 
and wood duck nesting boc checks indicated reduced breeding populations 
of wood ducks within the State. 
67 
