April. 1919] 



The Canadian Field-Naturalist 



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1. Pelican Island. The shingle spit upon which the ternery was situated is visible in the 

 foreground of the island. 



2. Young Herring Gull. The rocky character of shore adjacent to the ternery is here 

 shown. July 8, 1918. 



3. Caspian Tern's nest showing remarkable variation in eggs of single clutch. Also 

 exceptional in its employment of drift to form a "nest". 



4. Typical nest of Caspian Tern. Note entire absence of vegetable nesting materials. 



