Terns 



Ivory Gull 



Pagophila eburnea 



LL 10; May 25, 1974; 



Ft. Peck 

 n=1 



Caspian Tern 



Sterna caspia 



SI 



Common Tern 



Sterna hirundo 



SI 



Forster's Tern 



Sterna forsteri 



SI 



49 



