PI. 46. 



COMMON TERN. 



ARCTIC TERN. 



ROSEATE TERN. 



* - 



COMMON TERN. 



LESSER TERN. 



LESSER TERN. 



LESSER TERN. 





' 



COMMON TERN. 



ARCTIC TERN. 



ROSEATE TERN. 



LESSER TERN. 



ARCTIC TERN. 



