Numbers of Common Murres U. a. californica breeding along coast of California Current.

			Max. Number	Most Recent
Coastal locations	Years	Locations ^a	Survey Years	Estimate ^b	Trend	Source
Washington	1991-2006	Tatoosh	16	5,708	Dec-Increase	248, 177; Parrish, pers. comm.
	1996-2015	White-Bodeltehs	12	16,860	Increase	504
	1996-2015	Carroll-Jagged	12	2	Decrease	504
	1996-2015	Quillayute Needles	12	2,979	Decrease	504
	1996-2015	Other No. Wash locations	12	0	Decrease	504
	1996-2015	Split-Willoughby	12	0	Decrease	504
	1996-2015	Point Grenville	12	331	Decrease	504
Subtotal		Sites 24		25,880

Oregon	1988-2009	Tillamook Head Complex to Three Arches South	21	244,314	Decrease	502, 635
	1988-2009	Colony 243-013 to Sea Lion Caves Headlands	21	86,903	Increase	502, 635
	1988-2009	Chiefs Island to Face Rock	21	83,328	Increase	502, 635
	1988-2009	Tower Rock to Goat Island	21	214,163	Stable	502, 635
Subtotal		Sites 76		628,708

N. California	1989-2014	Prince-Castle-False Klamath	11	302,656	Increase	503 Barton, D. C., P. J. Capitolo, C. J. McChesney, H. R. Carter, R. T. Golightly, and W. B. Tyler (2017). Trends in seabird abundance. Chapter 2 In Comprehensive Seabird Monitoring for the Characterization and Future Evaluation of Marine Protected Areas in California’s North Coast Study Region (R. T. Golightly, D. C. Barton, and D. Robinette, Editors). Unpublished report, Humboldt State University, Department of Wildlife, Arcata, CA, USA; Point Blue Conservation Science, Lompoc, CA, USA; and University of California, Institute of Marine Sciences, Santa Cruz, CA, USA.
	1989-2014	White(DN)-Redding	20	266	Increase	503 Barton, D. C., P. J. Capitolo, C. J. McChesney, H. R. Carter, R. T. Golightly, and W. B. Tyler (2017). Trends in seabird abundance. Chapter 2 In Comprehensive Seabird Monitoring for the Characterization and Future Evaluation of Marine Protected Areas in California’s North Coast Study Region (R. T. Golightly, D. C. Barton, and D. Robinette, Editors). Unpublished report, Humboldt State University, Department of Wildlife, Arcata, CA, USA; Point Blue Conservation Science, Lompoc, CA, USA; and University of California, Institute of Marine Sciences, Santa Cruz, CA, USA.
	1989-2014	White (HU) to Pilot	7	175,063	Increase	503 Barton, D. C., P. J. Capitolo, C. J. McChesney, H. R. Carter, R. T. Golightly, and W. B. Tyler (2017). Trends in seabird abundance. Chapter 2 In Comprehensive Seabird Monitoring for the Characterization and Future Evaluation of Marine Protected Areas in California’s North Coast Study Region (R. T. Golightly, D. C. Barton, and D. Robinette, Editors). Unpublished report, Humboldt State University, Department of Wildlife, Arcata, CA, USA; Point Blue Conservation Science, Lompoc, CA, USA; and University of California, Institute of Marine Sciences, Santa Cruz, CA, USA.
	1989-2014	False Cape to High Tip	9	68,739	Stable	503 Barton, D. C., P. J. Capitolo, C. J. McChesney, H. R. Carter, R. T. Golightly, and W. B. Tyler (2017). Trends in seabird abundance. Chapter 2 In Comprehensive Seabird Monitoring for the Characterization and Future Evaluation of Marine Protected Areas in California’s North Coast Study Region (R. T. Golightly, D. C. Barton, and D. Robinette, Editors). Unpublished report, Humboldt State University, Department of Wildlife, Arcata, CA, USA; Point Blue Conservation Science, Lompoc, CA, USA; and University of California, Institute of Marine Sciences, Santa Cruz, CA, USA.
	1989-2014	Soldier Frank to Vizcaino	23	34,531	Increase	503 Barton, D. C., P. J. Capitolo, C. J. McChesney, H. R. Carter, R. T. Golightly, and W. B. Tyler (2017). Trends in seabird abundance. Chapter 2 In Comprehensive Seabird Monitoring for the Characterization and Future Evaluation of Marine Protected Areas in California’s North Coast Study Region (R. T. Golightly, D. C. Barton, and D. Robinette, Editors). Unpublished report, Humboldt State University, Department of Wildlife, Arcata, CA, USA; Point Blue Conservation Science, Lompoc, CA, USA; and University of California, Institute of Marine Sciences, Santa Cruz, CA, USA.
	1989-2014	Goat	13	3,542	Increase	503 Barton, D. C., P. J. Capitolo, C. J. McChesney, H. R. Carter, R. T. Golightly, and W. B. Tyler (2017). Trends in seabird abundance. Chapter 2 In Comprehensive Seabird Monitoring for the Characterization and Future Evaluation of Marine Protected Areas in California’s North Coast Study Region (R. T. Golightly, D. C. Barton, and D. Robinette, Editors). Unpublished report, Humboldt State University, Department of Wildlife, Arcata, CA, USA; Point Blue Conservation Science, Lompoc, CA, USA; and University of California, Institute of Marine Sciences, Santa Cruz, CA, USA.
	1989-2014	White (ME)	7	1,246	Increase	503 Barton, D. C., P. J. Capitolo, C. J. McChesney, H. R. Carter, R. T. Golightly, and W. B. Tyler (2017). Trends in seabird abundance. Chapter 2 In Comprehensive Seabird Monitoring for the Characterization and Future Evaluation of Marine Protected Areas in California’s North Coast Study Region (R. T. Golightly, D. C. Barton, and D. Robinette, Editors). Unpublished report, Humboldt State University, Department of Wildlife, Arcata, CA, USA; Point Blue Conservation Science, Lompoc, CA, USA; and University of California, Institute of Marine Sciences, Santa Cruz, CA, USA.
Subtotal		Sites 19

Central California	2014	Fish-Gualala-Gull (ME, SO)	5	11,887		P.J. Capitolo, G.J. McChesney, pers. comm.
	1972-2015	S. Farallon Island (SF)	43	233,219	Increase	83
	2015	N. Farallon Island (SF)	30	140,000	Increase	83
	2015	Gulf of Farallones Mainland (3)	30	85,190	Stable	83
	2018	Castle-Hurricane (MO)	37	4,914	Increase	636 Bednar, C. M., G. J. McChesney, Z. M. Burr, J. A. Windsor, A. C. Wilson, E. K. Schmidt, J. F. Kuwahara-Hu, P. J. Capitolo, and R. T. Golightly (2020). Restoration and Monitoring of Common Murre Colonies in Central California: Annual Report 2018: Luckenbach Trustee Council. Unpublished Report, U.S. Fish and Wildlife Service, San Francisco Bay National Wildlife Refuge Complex, Fremont, CA, USA.
Subtotal		Sites 10		463,323

Southern California	2011	Prince I.	1	209	Increase	98
Subtotal		Sites 1
Total		Sites 130		2,833,959	breeding birds
				1,416,980	pairs

^a Sites are locations identified in each respective source, and often represent combination of closely spaced locations.

^b To derive pairs, Washington (except Tatoosh), and California raw counts corrected by 1.67 (101 Carter, H. R., U. W. Wilson, R. W. Lowe, M. S. Rodway, D. A. Manuwal, J. E. Takekawa, and J. L. Yee (2001). Population trends of the Common Murre (Uria aalge californica). In Biology and Conservation of the Common Murre in California, Oregon, Washington, and British Columbia. Volume 1: Natural History and Population Trends (D. A. Manuwal, H. R. Carter, and T. S. Zimmerman, Editors). U.S. Geological Survey, Information Technical Report USGS/BRD/ITR-2000-0012, Washington, DC. pp. 35-98. ); central California corrected by Warzybok et al. (83), factor differing by year.