CONTENTS. 
iv 
PAGE 
Black-headed Gull. 68 
Laughing Gull ......... 80 
Ivory Gull. 82 
Common Gull.85 
Iceland Gull. 89 
Lesser Black-backed Gull.92 
Great Black-backed Gull. 95 
Herring Gull.98 
Glaucous Gull.103 
Kittiwake.107 
Skua.Ill 
Pomerine Skua.114 
Richardson’s Skua . . 118 
Buffon’s Skua.122 
Cinereous Shearwater.124 
Manx Shearwater.127 
Dusky Petrel ......... 130 
Capped Petrel.132 
Fulmar.131 
Bulwer’s Petrel . . . . . . . . .137 
Wilson’s Petrel.138 
Leach’s Petrel ......... 140 
Stormy Petrel.143 
