TABLE OF CONTENTS. 



Page. 



Family Stercoraridae 1 



Catharacta skua 1 



Skua 1 



HabitH 1 



Distribution 6 



Catharacta cliilensis 7 



Chilean Skua 7 



Habits 7 



Distribution 7 



Stercorarius iwmarinus 7 



Pomarine jaeger 7 



Habits 7 



Distribution 13 



Stercorarius parasiticus 14 



Parasitic Jaeger 14 



Habits 14 



Distribution 19 



Stercorarius longicaudus 21 



Long-tailed jaeger 21 



Habits 21 



Distribution 28 



Family Laridae 29 



Pagophila alba 29 



Ivory gull 29 



Habits 29 



Distribution 35 



Rissa tridactyla tridactyla 36 



Kittiwake 36 



Habits 36 



Distribution 43 



Rissa tridactyla pollicaris 44 



Pacific kittiwake 44 



Habits 44 



Distribution 48 



Rissa brevirostris 49 



Red-legged kittiwake 49 



Habits 49 



Distribution 51 



Larus byperboreus 52 



Glaucous gull 52 



Habits 52 



Distribution 60 



Larus leucopterus 62 



Iceland gull 62 



Habits 62 



Distribution 64 



