Chapter 2 



Population Trends of the Common Murre 

 (Uria aalge californica) 



by 



Harry R. Carter 1 , Ulrich W. Wilson 2 , Roy W. Lowe 3 , Michael S. Rodway 4 , 

 David A. Manuwal 5 , Jean E. Takekawa 6 , and Julie L. Yee 7 



'Humboldt State University, Department of Wildlife 

 Arcata, California 95521 



2 U.S. Fish and Wildlife Service, Washington Maritime National Wildlife Refuge Complex 



33 South Barr Road 

 Port Angeles, Washington 98362 



-'U.S. Fish and Wildlife Service, Oregon Coast National Wildlife Refuge Complex 



2127 S.E.OSU Drive 

 Newport, Oregon 97365 



4 Simon Fraser University, Department of Biological Sciences 

 Bumaby, British Columbia V5A 1S6 



^University of Washington, College of Forest Resources 



Wildlife Science Group 

 Seattle. Washington 98195 



*U.S. Fish and Wildlife Sen-ice, Nisqually National Wildlife Refuge 



100 Brown Farm Road 

 Olympia, Washington 98516 



7 U.S. Geological Survey, Western Ecological Research Center 



Dixon Held Station. 6924 Tremont Road 



Dixon, California 95620 



Abstract: Population trends for the common murre ( Uria aalge californica) were determined from available 

 whole-colony counts of murres in California. Oregon. Washington, and British Columbia from 1 800 to 1 995. 

 From 1 800 to 1 978, historical counts were sporadic and not standardized. From 1 979 to 1 995, standardized 

 whole-colony counts from aerial photographs were conducted in many years in California. Oregon, and 

 Washington. In contrast, no aerial photographs of murre colonies in British Columbia have been taken and 

 only a few other whole-colony counts have been conducted. Direct comparisons and statistical treatment of 



Suggested Citation: 



Carter. H. R., U. W. Wilson. R. W. Lowe, M. S. Rodway, D. A. Manuwal, J. E. Takekawa, and J. L. Yee. 200 1 . Population trends 

 of the common murre (Uria aalge californica). Pages 33-132 in D. A. Manuwal, H. R. Carter. T. S. Zimmerman, and D. L. 

 Orthmeyer. editors. Biology and conservation of the common murre in California, Oregon. Washington, and British Columbia. 

 Volume 1 : Natural history and population trends. U.S. Geological Survey. Information and Technology Report USGS/BRD/ITR- 

 2000-0012. Washington, D.C. 



