100000 -1 



10000 - 



< 

 o 



CA 



u 



oe 

 u 



o 



CO 



o 



1000 - 



1900 1910 1920 1930 1940 1950 1960 1970 



YEAR 



Figure 9. Trends of herring and great black-bacl<ed gulls, double-crested cormorants and common eiders nesting in Maine since 1900. 



45 



