Family Colymbids 
Western Grebe. 
TABLE OF CONTENTS. 
4&chmophorus occidentalis 
Habits. 
Distribution 
Colymbus Holbeelli__._.______-.-- 
Holbell’s Grebe 
Distribution 
Colymbus auritus. 
Horned Grebe 
Habits. 
Distribution 
Colymbus nigricollis californicus 
American Eared Grebe 
Habits. 
Distribution 
Colymbus dominicus brachypterus 
Mexican Grebe 
Habits 
Distribution 
Podilymbus Podiceps 
Pied-billed Grebe 
Habits. 
Distribution 
Family Gaviide 
Gavia immer. 
Habits. 
Distribution..=2---..---..---..5-2-..25 
Gavia adamsi 
Yellow-billed Loon 
Habits 
Distribution 
Gavia arctica 
Black-throated Loon 
Habits 
Distributlon..=- 2 =~ 2s2se eee cee eee ete s teases 
Gavia pacifiea.--=-+- 5-555. seseesewacen wee) ens ee ee ed 
Pacific Loon__---~--- 
Gavia stellata 
Red-throated Loon 
Habits 
Distribution=== 02-22 esc ssc ceeee ee ees 
