PI. 46. 





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COMMON TERN . 



LESSER TERN 



COMMON TERN 



ARCTIC TERN, 



LESSER TERN . 



ARCTIC TERN . 



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ROSEATE TERN . 



LESSER TERN 



ROSEATE TERN . 



COMMON TERN 





LES.SER TERN 



ARCTIC TERN . 



HANHART IITH . 



