﻿BIRDS 
  OF 
  N 
  E 
  >V 
  Y 
  O 
  11 
  Iv 
  

  

  Memoir 
  12. 
  N. 
  Y. 
  State 
  Museum 
  

  

  Plate 
  6 
  

  

  SABINE 
  GULL 
  adult 
  in 
  summer 
  

   Xema 
  ><abini 
  (Sabine) 
  

   LAUGHING 
  GULL 
  adult 
  in 
  summer 
  

   Larus 
  atrieiUa 
  Linnaeus 
  

  

  KITTIWAKE 
  

  

  Rissa 
  tridactyla 
  (Linnaeus) 
  

  

  ADULT 
  IN 
  summer 
  

   tMMATURE 
  

  

  BONAPARTE 
  GULL 
  

  

  Larua 
  pliiladelipliia 
  (Ord) 
  

  

  ADULT 
  IN 
  SUMMER 
  

   IMMATURE 
  

  

  IVORY 
  GULL 
  

  

  Pagophila 
  alba 
  Gunnerus 
  

  

  IMMATURE 
  ADULT 
  IN 
  SUMMER 
  

  

  All 
  6 
  nat. 
  size 
  

  

  