1 J I li D S OF N K >V YORK 



Memoir 12. N. Y State Museum 



Plate 6 



SABINE GULL adult in summer 

 Xenta sabini (Sabine) 

 LAUGHING GULL adult in summer 



Larns atricilla Linnaeus 



KITTIWAKE 



Iiis.sa Iridactijla (Linnaeus) 



ADULT IN SUMMER 

 IMMATURE 



BONAPARTE OULL 



Lot us iiliilddclitJtUi (Onl) 



ADULT IN SUMMER 

 IMMATURE 

 IVORY GULL 



ragophila alha Gunnerus 



IMMATURE ADULT IN SUMMER 



All ^ nut. size 



