FIGURE 1 
WUMBER OF DOVES HEARD WEEELY OW THREE 20-NILE TRANSHOTS 
Spring and Summer, 1951. 
08 | ; NX 
4 \ 
35 | \ | / 


” 
© oe 3 
30 9 \- 

teehee aoe oe 
Route 21 SW Columbia county. 
Ronte 3: N¥ Iewa county. 
