CONTENTS. 



Groui- 3. 

 Groi:p 4. 



TiTLEPAGE . 



Preface 

 Contents 

 Glossary . 

 Topography of a Bird 



Introduction 

 How TO Measure a Bird 

 Index to Key to Families. Water Birds 

 Group 1. Toes, four, with lobate weljs, ov webs ou sides of toes . 

 Group 2. Toes, four; front toes palmate (full webbed) ; hind toe uot eou 

 nected with front ones by wel) ..... 



Toes, four, full webbed; bind toe connected with front ones liy 

 web 



Toes, four, uot full webbed ; small welis between toes at base, or 

 toes entirely without web ...... 



Section 1. Hind toe, raised above level of front toes . 



Section 2. Hind toe, on level with front toes 

 Group 5. Toes, three, full webbed ; no hind toe .... 



Group 6. Toes, three ; a small web between toes, or entirely without we 

 Key to the Species ov Water Birds of Eastern North A:merica . 

 Family PoDiciPioyE. Grehes 

 Family GaviidyE. Loons .... 

 Family Alcid^e. Auks, Puffins, and Murres 

 Family Stercorariid^e. Skuas and JyiccERs 

 Family Larid.e. Gulls and Terns 

 Subfamily Larin^e. Golls 

 Subfamily Sternin^.. Terns 

 Family RiiYNCiioPiDyE. Skimmers 

 Family DioMEDEiDiE. Alp.atrosses 



(y) 



