2.7 Summary of most-recent surveys of common murres at colonies in British Columbia, 1977-1997 64 



2.8 Comparison of counts of common murres at subcolony sites on Triangle Island in 3 years from 



1982 to 1989 65 



2.9 Total sum of common murres counted and numbers of breeding adults estimated in California, 

 Oregon. Washington, and British Columbia in 1988-1989 66 



Figures 

 Number Page 



1.1 Common murre (Una aalge califomica) in breeding plumage at the South Farallon Islands, 

 California 3 



1.2 Distribution of the common murre on the Pacific coast of the continental United States and Canada 3 



1 .3 Breeding colony of common murres in the Upper Shubrick Point study plot at the South Farallon 

 Islands. California, May 1995 5 



1 .4 Breeding colony of common murres at Puffin Rock near Triangle Island, British Columbia, 



16 July 1985 5 



1 .5 Reproductive success for first eggs of the common murre in the Upper Shubrick Point study plot at 



the South Farallon Islands. California, 1972-1983 10 



1.6 Parent-chick pair of common murres at sea just minutes after departing from the colony at Three 



Arch Rocks, Oregon, 11 July 1989 13 



1 .7 Variation in diet composition of the common murre between three marine habitats and three times 



of year in the Gulf of the Farallones in central California, 1985-1988 17 



2. 1 Distribution of common murre colonies in northern California (Del None to Sonoma Counties) 40 



2.2 Distribution of common murre colonies in central California (Marin to Monterey Counties) and 

 southern California (Santa Barbara County) 40 



2.3 Trends in whole-colony counts for six colony complexes of common murres in central California, 

 1979-1995 43 



2.4 Trends in whole-colony counts for common murres in central California. 1979-1995 43 



2.5 Changes in whole-colony counts of common murres at selected colonies in northern California. 

 1979-1995 46 



2.6 Changes in whole-colony counts of common murres in northern California, 1979-1989, excluding 



the Castle Rock colony 46 



2.7 Distribution of common murre colonies in Oregon (Clatsop to Curry Counties) 49 



2.8 Changes in whole-colony counts for 15 sample colonies of common murres in Oregon. 1988-1995 ... 53 



2.9 Distribution of common murre colonies in Washington (Clallam to Pacific Counties) 55 



2.10 Trends in whole-colony counts for common murres in Washington, 1979-1995. excluding Tatoosh 

 colonies 57 



2.11 Trends in whole-colony counts for four colony complexes of common murres in Washington, 

 1979-1995 58 



2.12 Trends in whole-colony counts for common murres in southern Washington. 1979-1995 59 



2.13 Changes in whole-colony counts for common murres in northern Washington. 1979-1995 61 



2.14 Distribution of common murre colonies in northern British Columbia and the southern edge of 

 Alaska 62 



2.15 Distribution of common murre colonies in southern British Columbia 62 



2.16 Changes in whole-colony counts of common murres at breeding colonies in central California (all 

 colonies), northern California (excluding the Castle Rock colony), Oregon (15 sample colonies), 



and Washington (excluding Tatoosh colonies), 1979-1995 68 



