FIGURES (Continued) 



Number 

 8 



9 



10 

 11 



Estimated breeding chronology of three species of 

 alcids nesting in Maine 



Trends of herring and great black-backed gulls, 

 double-crested cormorants and common eiders nesting 

 in Maine since 1900 



Trends of Arctic and common terns nesting in Maine 

 since 1900 



Trends in nesting populations of three species of 

 alcids in Maine (excluding Machias Seal Island) 

 since 1900 



Page 

 43 



45 

 49 



51 



TABLES 

 Number Page 



1 Colonial nesting waterbirds in Maine 4 



2 Number of colonies and nesting pairs of colonial water- 

 birds in Maine and observations of nesting ospreys, 



1977 13 



3 Nesting populations, by species, of waterbird colonies 



in Maine, 1977 14 



4 Ownership of sites where colonies were located in 1977, 

 listed by species and number of pairs 53 



5 Ownership of sites where colonies were located in 1977, 

 listed by species and number of colonies 54 



VI n 



