
MISSISSIPPI FLY WAY 
most numerous nesting species, and mallards were not far behind. On-the-. 
spot check counts in the prairie marshes of northwest lowa each spring and 
summer since 1949 have provided a studied opinion as to the production trends 
of these species. lowa's production of these two species in 1956 has been 
poorer than production during any year since observations were begun in 1949. 
Conclusions - 
It is estimated that the fall flight from Iowa will be greatly reduced as 
_ compared to last year. 
89 
