170 
5. There was a 13 percent increase in the number of birds observed in 
the trend areas in the mountainous region, 
6. Species composition changes were noted in all trend areas. An 
increase in the percentage composition of pintails and a decrease in shovelers 
and blue-winged teal was especially noticeable in the northern glaciated prairie 
region, 
7. Production has increased with more and larger average -sized 
broods being observed over the same census routes. 
