Seabirds (recent appear at top)

Below are my publications on seabirds, to view a complete list of my publications please click on the button (left).

Duffy, D.C.,  A. McKnight and D.B. Irons. June 2013. Trans-Andean passage of migrating Arctic Terns over Patagonia. Marine Ornithology. 41:155-159

McKnight, A., A.J. Allyn and D.C. Duffy. 2013. Stepping stone pattern in Pacific Arctic tern
migration reveals the importance of upwelling areas. Mar Ecol Prog Ser. 491:253-264

Duffy, D.C. 2010. Changing Seabird Management in Hawaii: From Exploitation through
Management to Restoration. Waterbirds. 33(2):193-207

Duffy, D.C. and L. Elliott. 2010. Oil and Hawaiian Seabirds. Elepaio. 70(6): 41-43

Young, L.C., C. Vanderlip, D.C. Duffy, V. Afanasyev and S.A. Shaffer. 2009. Bringing Home the Trash: Do Colony-Based Differences in Foraging Distribution Lead to Increased Plastic Ingestion in Laysan Albatrosses? PLoS ONE 4(10): e7623. doi:10.1371/journal.pone.0007623

Hebshi, A., D.C. Duffy and K.D. Hyrenbach. 2008. Associations between seabirds and subsurface predators around Oahu, Hawaii. Aquatic Biology. 4: 89-98

Wilson, R.P., D.C. Duffy, M.P. Wilson and B. Araya. 1995. Aspects of the ecology of species replacement in Humbolt and Magellanic penguins in Chile. Le Gerfaut. 85: 49-61

Duffy, D.C. 1995. Why is the Double-crested Cormorant a Problem? Insights from Cormorant Ecology and Human Sociology. Colonial Waterbirds. 18 (Special Publication 1): 25-32

Duffy, D.C. and Schneider. 1994. Seabird-fishery interactions: a manger's guide. In D. N. Nettleship, J. Burger and M. Gochfeld (Eds.). Seabirds on islands : threats, case studies and action plans : proceedings of the Seabird Specialist Group Workshop held at the XX World Conference of the International Council for Bird Preservation, University of Waikato, Hamilton, New Zealand, 19-20 November 1990.

Duffy, D.C. 1994. Afterwards: an agenda for managing seabirds and islands. BirdLife Conservation Series. 1: 311-318 

Duffy, D.C. 1994. The guano islands of Peru: the once and future management of a renewable resource. BirdLife Conservation Series. 1: 68-76

Duffy, D.C. 1992. Biodiversity and Research on Seabirds. Colonial Waterbirds. 15(1): 155- 158

Duffy, D.C. 1990. Seabirds and the 1982-1984 El Nino/Southern Oscillation. IN Glynn, P. W. ED. Global ecological consequences of the 1982/83 El Nino Southern Oscillation. Elsevier. pp. 395-415

Wilson, R.P., M.P. Wilson, D.C. Duffy, M.B. Araya and N. Klages. 1989. Diving behavior and prey of the Humboldt penguin (Spheniscus humboldti). Journal-fuer-orthnithologie. 130(1): 75-79

Duffy, D.C. 1989. Seabird foraging aggregations: a comparison of two southern upwellings. Colonial Waterbirds. 12(2): 164-179

Duffy, D. C. and Wissel. 1988. Models of fish school size in relation to environmental productivity. Ecological Modeling. 40: 201-211

Wilson, R.P., M.T. Wilson and D.C. Duffy. 1988. Contemporary and Historical Patterns of African Penguin Spheniscus demersus: Distribution at Sea . Estuarine, Coastal and Shelf Science. 26: 447-458

Duffy, D. C. 1988. Predator-prey interactions between common terns and butterfish. Ornis Scandinavica19: 160-163

Schneider, D.C., D.C. Duffy and G.L. Hunt, Jr. 1988. Cross-shelf gradients in the abundance of pelagic birds. IN Ouellet, H. (Ed.) Acta XIX Congressus Internationalis Ornithologici Volume I. Published for National Museum of Natural Sciences by University of Ottawa Press. pp. 976-981 

Duffy, D. C., Heseltine and La Cock. 1988. Food size and aggressive interactions between two species of gulls: an experimental approach to resource partitioning. Ostrich58: 164-167

Duffy, D.C., W.R. Siegfried and S. Jackson. 1987. Seabirds as consumers in the southern Benguela region. S. Afr. J. Mar. Sci. 5: 771-790

Duffy, D.C., F.S. Todd and W.R. Siegfried. 1987. Submarine foraging behavior of Alcids in an artificial environment. Zoo Biology. 6: 373-378

Walter, C.B., D.C. Duffy, J. Cooper and W. Suter. 1987. Cape anchovy in swift tern diets and fishery landings in the Benguela upwelling region, South Africa. South African Journal of Wildlife Research. 17(4): 139-142

Duffy, D.C., R.P. Wilson, and M.P. Wilson. 1987. Spatial and temporal change in the diet of the Cape cormorant off the coast of Southern Africa. The Condor. 89: 830-834

Duffy, D.C. and W.R. Siegfried. 1987. Historical variations in food consumption by breeding seabirds of the Humboldt and Benguela upwelling regions. IN Croxall, J. P. (Ed.) Seabirds: feeding biology and role in marine ecosystems. Cambridge University Press. pp. 327-346

Duffy, D.C. 1986. Seabird densities and aggregations during the 1983 El Nino in the Galapagos Islands. Wilson Bulletin. 98 (4): 588-591

Duffy, D.C. 1986. Foraging at patches: interactions between Common and Roseate
Terns. Ornis Scandinavica 17: 47-52 

Duffy, D.C. and S. Jackson. 1986. Diet studies of seabirds: A review of methods. Colonial Waterbirds. 9: 1-17

Wilson, R.P. and D.C. Duffy. 1986. Short Note. Prey seizing in African penguins Spheniscus demersus. Ardea. 74: 211-214

Duffy, D.C. and Graeme D. LaCock. 1985. Partitioning of nesting space among seabirds of the Benguela upwelling region. Ostrich 56: 186-201. 

David C. Schneider, D.C. and D.C. Duffy. 1985. Scale-dependent variability in seabird abundance. Marine Ecology Progress Series. 25: 211-218

Duffy, D.C. Coppelia Hays and Manuel A. Plenge. 1984. The Conservation Status of Peruvian Seabirds. ICBP Technical Publication No. 2: 245-259

Duffy, D.C. Land-birds of a guano island off the coast of Peru. Received I4 October 1981 Bulletin of the British Ornithologists' Club. Vol. 102 No. 3 Pages 87-88

Duffy, D.C. and Mario Hurtado. 1984. The Conservation and Status of Seabirds of the Ecuadorian Mainland. ICBP Technical Publication No. 2: 231-236

Duffy, D.C. 1981. A master plan for ornithology in the Galapagos Islands. Noticias de Galapagos 34: 10-16 

Duffy, D.C. and R.E. Ricklefs. 1981. Observations on Growth of Blue-footed Boobies and Development of Temperature Regulation in Peruvian Guano Bird. Journal of Field Ornithology. 52 (4): 332-336

Duffy, D.C. Jan. 7, 1980. Seasonal Changes in the seabird fauna of Peru  grounds? Charles Darwin Research Station: 19806-19811

Duffy, D.C. N. Atkins and D.C. Schneider. 1981. Do shorebirds compete on their wintering grounds? Auk. 98: 215-229

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