2000 I 

 I900 

 (&00 

 I TOO 



i<«oo I 



I500 

 1400 1 



I300 



PRODUCTIVITY OF POPULATIONS 

 CONNECTICUT HILL 



^1 Braeding Popula+ion 



I I Poten+ial Rspula+lon at Ha+cWing 



Actual Population at Hatching 



Bir-ds of the. Year in 

 September I Population 

 R.esiduol Breeders in 

 September I Population 



545 



2000 

 1900 

 I BOO 

 iTOO 

 l&OO 

 I500 

 I400 

 I300 

 I ZOO 



V) 



a 

 m 



bJ 



m 



Z 



sooi 



200 



loo 



ADIRONDACK 



1930 1931 I93Z 1933 



1934 1935 



93<i 1937 193a 

 YEAR 



1933 1940 1941 194a 



I 



300 



ZOO 



lOO 



FIGURE 51. GROUSE POPULATION FLUCTUATIONS RECORDED FROM YEAR TO YEAH DURING THE 

 INVESTIGATION ON THE CONNECTICUT HILL AND ADIRONDACK STUDY AREAS 1930-1942 



