Data Zone
Abraham, C.L. and Sydeman, WJ. 2004. Ocean climate, euphausiids and auklet nesting: inter-annual trends and variation in phenology, diet and growth of a planktivorous seabird Ptychoramphus aleuticus. Marine Ecology Progress Series 274: 235-250.
Ainley, D. G.; Grau, C. R.; Roudybush, T. E.; Morrell, S. H.; Utts, J. M. 1981. Petroleum ingestion reduces reproduction in Cassin's Auklets. Marine Pollution Bulletin 12: 314-317.
Albores-Baraja, Y.V. and Soldatini, C. 2011. Effects of human disturbance on a burrow nesting seabird. Revista Mexicana de Biodiversidad 82: 1262-1266.
Albores-Barajas, Y.V.; Soldatini, C.; Furness, R.W. 2009. Are burrow-nesting seabird chicks affected by human disturbance? Waterbirds 32: 572-578.
Bailey, E. P. and Kaiser, G. W. 1993. Impacts of introduced predators on nesting seabirds in the Northeast Pacific. In: K. Vermeer, K. T. Briggs, K. H. Morgan and D. Siegel-Causey (eds), Proceedings of a Symposium on the Status of Seabirds in the North Pacific, February 1990, Canadian Wildlife Service , Ottawa.
Bertram, D. F.; Mackas, D. L.; McKinnell, S. M. 2001. The seasonal cycle revisited: interannual variation and ecosystem consequences. Progress in Oceanography 49: 283-307.
Bertram, D.F. and Nagorsen, D.W. 1995. Introduced rats, Rattus spp., on the Queen Charlotte Islands: implications for seabird conservation. Canadian Field Naturalist 109: 6-10.
Bird, J.P., Martin, R., Akçakaya, H.R., Gilroy, J., Burfield, I.J., Garnett, S.G., Symes, A., Taylor, J., Şekercioğlu, Ç.H. and Butchart, S.H.M. 2020. Generation lengths of the world’s birds and their implications for extinction risk. Conservation Biology 34(5): 1252-1261.
Butcher, G. S.; Niven, D. K. 2007. Combining data from the Christmas bird count and the breeding bird survey to determine the continental status and trends of North American birds.
Carter, H. R., Lee, V. A., Page, G. W., Parker, M. W., Ford, R. G., Swartzman, G., Kress, S. W., Siskin, S.W., Singer, S.W. and Fry, D.M. 2003. The 1986 Apex Houston oil spill in central California: seabird injury assessments and litigation process. Marine Ornithology 31: 9-19.
del Hoyo, J.; Elliott, A.; Sargatal, J. 1996. Handbook of the Birds of the World, vol. 3: Hoatzin to Auks. Lynx Edicions, Barcelona, Spain.
Devitt, K.; Jardine, C. 2016. The Blob, Monitoring Ocean Ecosystems. Birdwatch Canada 74(8-9).
Drent, R.H. and Guiguet, C.J. 1961. A catalogue of British Columbia sea-bird colonies. British Columbia Provincial Museum, Occasional Papers 12.
Erlandson, J.M., Rick, T.C., Collins, P.W. and Guthrie, D.A. 2007. Archaeological implications of a bald eagle nesting site at Ferrelo Point, San Miguel Island, California. Journal of Archaeological Science 34(2): 255-271.
Floren, H. P.; Shugart, G. W. 2017. Plastic in Cassin's Auklets (Ptychoramphus aleuticus) from the 2014stranding on the Northeast PacificCoas. Marine Pollution Bulletin 117(1-2): 496-498.
Harfenist, A. 2004. Cassin's Auklet - Ptychoramphus aleuticus. Accounts and Measures for Managing Identified Wildlife - Accounts V. 2004. Ministry of Environment British Columbia.
Hartman, L.H. and Eastman, D.S. 1999. Distribution of introduced Raccoons Procyon lotor on the Queen Charlotte Islands: implications for burrow-nesting seabirds. Biological Conservation 88: 1-13.
Hartman, L.H.; Gaston, A.J.; Eastman, D.S. 1997. Raccoon predation on ancient murrelets on east Limestone Island, British Columbia. Journal of Wildlife Management 61(2): 377-388.
Hipfner, J. M. 2008. Matches and mismatches: ocean climate, prey phenology and breeding success in a zooplanktivorous seabird. Marine Ecology Progress Series 368: 295-304.
Hipfner, J. M., M. J. F. Lemon, and M. S. Rodway. 2010. Introduced mammals, vegetation changes and seabird conservation on the Scott Islands, British Columbia, Canada. Bird Conservation International 20(295-305).
Hipfner, J. M.; Bertram, D. F.; Drever, M. C. 2019. Limited consequences of infestation with a blood-feeding ectoparasite for the nestlings of two North Pacific seabirds. Journal of Avian Biology 50(1): e01927.
Hipfner, J.M., Morrison, K.W. and Darvill, R. 2011. Peregrine Falcons enable two species of colonial seabirds to breed successfully by excluding other aerial predators. Waterbirds 34: 82-88.
IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-3. Available at: https://www.iucnredlist.org. (Accessed: 10 December 2020).
Johns, M. E.; Warzybok, P.; Bradley, R. W.; Jahncke, J.; Lindberg, M.; Breed, G. A. 2017. Age, timing, and a variable environment affect double brooding of a long-lived seabird. Marine Ecology Progress Series 564: 187-197.
Jones, T.; Parrish, J. K.; Peterson, W. T.; Bjorkstedt, E. P.; Bond, N. A.; Ballance, L. T.; Bowes, V.; Hipfner, J. M.; Burgess, H. K.; Dolliver, J. E.; Lindquist, L. T.; Lindsey, J. Nevins, H. M.; Robertson, R. R.; Roletto, J. Wilson, L. Joyce, T.; Harvey, J. 2018. Massive Mortality of a Planktivorous Seabird in Response to a Marine Heatwave. Geophysical Research Letters 45: 3193-3202.
Lee, D .E.; Nur, N.; Sydeman, W. J. 2007. Climate and demography of the planktivorous Cassin's Auklet Ptychoramphus aleuticus off northern California: implications for population change. Journal of Animal Ecology 76: 337-347.
Manugian, S., Elliott, M.L., Bradley, R., Howar, J., Karnovsky, N., Saenz, B., Studwell, A., Warzybok, P., Nur, N. and Jahncke, J. 2015. Spatial Distribution and Temporal Patterns of Cassin’s Auklet Foraging and Their Euphausiid Prey in a Variable Ocean Environment. PLoS One 10(12).
Manugian, S.; Elliott, M. L.; Bradley, R. W.; Howar, J.; Karnovsky, N.; Saenz, B.; Studwell, A.; Warzybok, P.; Nur, N.; Jahncke, J. 2015. Spatial Distribution and Temporal Patterns of Cassin’s Auklet Foraging and Their Euphausiid Prey in a Variable Ocean Environment. PLoS ONE 10: e0144232.
Manuwal, D.A. 1979. Reproductive commitment and success of Cassin's Auklet. Condor 81: 111-121.
McChesney, G.J.; Tershy, B.R. 1998. History and status of introduced mammals and impacts to breeding seabirds on the California channel and northwestern Baja California Islands. Colonial Waterbirds 21: 335-347.
Meehan, T. D.; LeBaron, G. S.; Dale, K.; Michel, N. L.; Verutes, G. M.; Langham, G. M. 2018. Abundance trends of birds wintering in the USA and Canada, from Audubon Christmas Bird Counts, 1966-2017, version 2.1. New York, New York, USA
Morrison, K. W., Hipfner, J. M., Blackburn, G. S., and Green, D. J. 2011. Effects of extreme climate events on adult survival of three Pacific Auks. The Auk 128: 707-705.
Nelson, D.A. 1989. Gull predation on Cassin’s Auklet varies with lunar cycle. The Auk 106: 495-497.
Nettleship, D.N. 1996. Cassin's Auklet (Ptychoramphus aleuticus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. and de Juana, E. (eds), Handbook of the Birds of the World Alive, Lynx Edicions, Barcelona.
O'Hara, P. D.; Avery-Gomm, S.; Wood, J.; Bowes, V.; Wilson, L.; Morgan, K. H.; Boyd, W. S.; Hipfner, J. M.; Desforges, J-P.; Bertram, D. F.; Hannah, C.; Ross, P. S. 2019. Seasonal variability in vulnerability for Cassin's auklets (Ptychoramphus aleuticus) exposed to microplastic pollution in the Canadian Pacific region. Science of the Total Environment 649: 50-60.
Page, G. W. and Carter, H.R. 1986. Impacts of the 1986 San Joaquin Vallev Crude oil Spill on marine birds in central California (Unpublished report). Point Reyes Bird Observatory, Stinson Beach, CA.
Page, G. W., Carter, H. R., and Ford, R. G. 1990. Numbers of seabirds killed or debilitated in the 1986 Apex Houston oil spill in central California. Studies Avian Biol. 14: 164-174.
Regehr, H.M.; Rodway, M.S.; Lemon, M.J.F.; Hipfner, J.M. 2007. Recovery of the Ancient Murrelet Synthliboramphus antiquus colony on Langara Island, British Columbia, following eradication of invasive rats. Marine Ornithology 35: 137-144.
Rodway, M.S. 1991. Status and conservation of breeding seabirds in British Columbia. In: Croxall J.H. (ed.), Seabird status and conservation: A supplement, pp. 43-102. International Council of Bird Preservation Technical Publication No. 11.
Rodway, M.S.; Lemon, M.J.F. 2011. Use of permanent plots to monitor trends in burrow-nesting seabird population in British Columbia. Marine Ornithology 39: 243-253.
Smith, J. L. and Morgan, K. H. 2005. An assessment of seabird bycatch in longline and net fisheries in British Columbia. Canadian Wildlife Service Technical Report Series 401. Environment Canada, Delta, British Columbia.
Studholme, K. R.; Hipfner, J. M.; Domalik, A. D.; Iverson, S. J.; Crossin, G. T. 2019. Year-round tracking reveals multiple migratory tactics in a sentinel North Pacific seabird, Cassin’s auklet. Marine Ecology Progress Series 619: 169-185.
Thoresen, A. 1964. Breeding behavior of the Cassin Auklet. Condor 66(456-476).
Veitch, C. R.; Clout, M. N. 2002. Turning the Tide: the eradication of invasive species. IUCN, Gland and Cambridge.
Welch, C. 2015. Mass Death of Seabirds in Western U.S. Is 'Unprecedented'. National Geographic. Available at: http://news.nationalgeographic.com/news/2015/01/150123-seabirds-mass-die-off-auklet-california-animals-environment/. (Accessed: 02/09/2015).
Whitworth, D.L., Harvey, A.L., Carter, H.R., Young, R.J., Koepke, J.S. and Mazurkiewicz, D.M. 2015. Breeding of Cassin’s Auklets Ptychoramphus aleuticus at Anacapa Island, California, after eradication of Black Rats Rattus rattus. Marine Ornithology 43(1): 19-24.
Wolf, S., Keitt, B.S., Aguirre-Muñoz, A., Tershy, B.R., Palacios, E. and Croll, D.A. 2006. Transboundary seabird conservation in an important North American marine ecoregion. Environmental Conservation 33: 294-305.
Wolf, S.G., Snyder, M.A., Sydeman, W.J., Doak, D.F. and Croll, D.A. 2010. Predicting population consequences of ocean climate change for an ecosystem sentinel, the seabird Cassin’s auklet. Global Change Biology 16: 1923-1935.
Žydelis, R., Small, C. & French, G. 2013. The incidental catch of seabirds in gillnet fisheries: A global review. Biological Conservation 162: 76-88.
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Recommended citation
BirdLife International (2024) Species factsheet: Cassin's Auklet Ptychoramphus aleuticus. Downloaded from
https://datazone.birdlife.org/species/factsheet/cassins-auklet-ptychoramphus-aleuticus on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/12/2024.