Widespread in tropical oceans
            
               ...breeds on the ground of rocky
               isands.
          
         
            
               Onychoprion anaethetus
            
               (L 14.2-18.1" WS 30.3-31.9)
          
         
            
               Michaelmas Cay
            
               Great Barrier Reef
            
               20Oct2015
          
         
            
               I am a conscientious man, when I
               throw rocks at seabirds, I leave no
               tern unstoned.
            
               (Ogden Nash)
          
         
            
               Onychoprion is Greek for saw-
               claw; anaethetus is Greek for
               senseless, stupid - because
               nesting birds allowed seafarers
               close enough to kill them.