Selected Posters and
Publications (recent appear at top)
Duffy, D.C. and C. Martin. 2019. Cooperative
Natural Resource and Invasive Species Management
in Hawai'i. Chapter 5
in : C.R. Veitch, M.N. Clout, A.R. Martin, J.C. Russell and C.J.
(eds.). Island invasives: scaling up to meet the challenge.
Occasional Paper SSC no. 62. Gland, Switzerland: IUCN.Pages
Goldstein, M.I., D.C. Duffy, S. Oehlers, N.
Catterson, J. Frederick and S. Pyare. 2018. Interseasonal movement
and non-breeding locations of Aleutian terns Onychoprion
aleuticus. Marine Ornithology 47: 67–76
Lepczyk C.A., J.E.
Fantle-Lepczyk, K. Misajon, D. Hu and D.C. Duffy. 2018. Long-term
history of vehicle collisions on the endangered Nene (Branta
sandvicensis). PLoS ONE14(2): e0210180
Duffy, D.C. and F.H. Vargas. 2018. From the
Vagile to the Sedentary: Disease
Implications and New Host Relationships on Islands. Chapter 5
in Disease Ecology, Social and Ecological Interactions in the
Galapagos Islands. P.G. Parker (ed.) Springer International
Fantle-Lepczyk, J., A. Taylor, D. Duffy, L.H.
Crampton and S. Conant. March 2016. Weather Influences on the Nest
Success of the Endangered Puaiohi (Myadestes palmeri). The
Wilson Journal of Ornithology. 128(1):43–55
Duffy, D.C., D.D. Elliott, G.M. Hart, K.
Gunderson, J. Aguon-Kona, R. Bartlett, J. Fujikawa, P. Gmelin, C.
Javier, L. Kaneholani, T. Keanini, J. Parish, T. Penniman and A.
Works. June 2015. Has the Small Indian Mongoose Become Established
on Kaua'i Island, Hawai'i?
Pacific Science. 69(4):559-·565
Hu, D., G.E. Ackerman, C.S. Natividad Bailey,
D.C. Duffy and D.C. Schneider. July 2015. Hawaiian Petrel Monitoring
Protocol - Pacific Island Network
Duffy, D.C. The Virus Next Time.
Take action against new viruses by making Hawaii less hospitable for
mosquitoes. Honolulu Civil Beat
Duffy, D.C. New president of UH must help
define its mission and values. May 31, 2014. Honolulu Star
Duffy, D.C. and P.I. Capece. 2014. Depredation
of endangered burrowing seabirds in Hawaii: management priorities.
Marine Ornithology. 8:149-152
Duffy, D.C. Recent bad news aside, UH is
Hawaii's best hope. May 22, 2013. Honolulu Star Advertiser
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. and P. Capece. 2012. Biology and
Impacts of Pacific Invasive Species 7. The domestic cat (Felis
catus). Pacific Science. 66(2):173-212
Samuel, M.D., P.H.F. Hobbelen, F. DeCastro, J.A.
Ahumada, D. LaPointe, C.T. Atkinson, B.L. Woodworth, P.J. Hart and
D.C. Duffy. 2011. The dynamics, transmission, and population impacts
of avian malaria in native Hawaiian birds: a modeling approach.
Ecological Applications. 21 (8):2960-2973
Duffy, D.C. 2011. No Room in the Ark? Climate
Change and Biodiversity in the Pacific Islands of Oceania. Pacific
Conservation Biology . 17:192-200
Duffy, D.C. 2010. Changing Seabird Management
in Hawai'i: From Exploitation through
Management to Restoration. Waterbirds.
Duffy, D.C. and L. Elliott. 2010. Oil and
Hawaiian Seabirds. Elepaio.
Kraus, F. and D.C. Duffy. 2010. A
successful model from Hawaii for rapid response to invasive species.
Journal for Nature Conservation. 18: 135-141
Lepczyk, C.A., N. Dauphine, D.M. Bird, S.
Conant, R.J. Cooper, D.C. Duffy, P.J. Hatley, P.P. Marra, E. Stobe
abd S.A. Temple. 2009. What Conservation Biologists Can Do to
Counter Trap-Neuter-Return: Response to Longcore et al.
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.
Hebshi, A., D.C. Duffy and K.D.
Hyrenbach. 2008. Associations between seabirds and subsurface
predators around Oahu, Hawaii. Aquatic Biology. 4: 89-98
Duffy, D.C. and F. Kraus. 2008. Taking
Medawar's medicine: science as the art of the soluble for Hawaii's
terrestrial extinction crisis. Pacific Conservation Biology14: 80-88 (request reprint)
Foster, J.T., B.L. Woodworth, L.E.
Eggert, P.J. Hart, D. Palmer, D.C. Duffy and R.C. Fleischer. 2007.
Avian malaria (Plasmodium relictum) and the origins of
resistant populations of Hawaiian Honeycreepers. Molecular
Duffy, D.C., S. Conant, S.F. Dunbar,
N.W. Yeung, J.M. Hawhee, W.A. Kuntz, S.M. Plentovich, K.L. Krend,
V.K., Stein, K.R. Buholm, H.L. Spalding, M. Parker, M.L. Dailer, and
L.E. Kozloff. July 2006 Hawaii Conservation Conference Poster:
Can plan or no can plan? Review of natural resource management
planning in Hawaii. Hawaii Convention Center, Honolulu, HI
Porter, W.P., N. Vakharia, W.D.
Klousie, and D.C. Duffy. 2006. Po'ouli landscape bioinformatics
models predict energetics, behavior, diets, and distribution on
Maui.From the symposium "Ecophysiology and Conservation: The
Contributions of Energetics" presented at the annual meeting of the
Society for Integrative Biology, January 4-8, 2006 at Orlando, FL.
Duffy, D.C. and F. Kraus. May 2006.
Science and the Art of the Solvable in
Hawaii's Extinction Crisis. Environment Hawaii 16(11)1: 3-6.
View complete text in html format
Woodworth, B.L., C.T. Atkinson, D.A. LaPointe, P.J. Hart, C.S.
Spiegel, E.J. Tweed, C. Henneman, J. LeBrun, T. Denette, R. Demots,
K.L. Kozar, D. Trigilia, D. Lease, A. Gregor, T. Smith, and D.C.
Duffy. 2005. Host population persistence in the face of
introduced vector-borne diseases: Hawaii amakihi and avian malaria.
Proc. of the Nat. Acad. of Sciences.102(5): 1531-1536
Duffy, D.C., K. Boggs. R.H. Hagenstein, R. Lipkin and J.A. Michaelson. 1999. Landscape assessment
of Alaska's terrestrial biodiversity.
Conservation Biology. 13(6): 1332-1343
Meier, A.J., S.P. Bratton and D.C.
Duffy. 1996. Biodiversity in the herbacious
layer and salamanders in Appalachian primary forests. In M. Byrd (Ed.) Eastern Old
Growth Forests. Island Press. Washington, DC. pp. 49-64
Duffy, D.C. and L. Hoch. 1995.
Probable breeding of the red-billed tropicbird in Costa Rica.
Colonial Waterbirds. 18(2): 211-215
Meier, A.J., S.P. Bratton and D.C. Duffy. 1995.
Possible ecological mechanisms for loss of vernal herb diversity in
logged eastern deciduous forest. Ecological Applications. 5: 935-946
Olsen, B., D.C. Duffy, T.G.T. Jaenson,
A. Gylfe, J. Bonnedahl and S. Bergstrom.
December 1995. Transhemispheric exchange of Lyme disease spirochetes
Journal of Clinical Microbiology. 33(12): 3270-3274
Nettleship, D.N. and D.C. Duffy. 1995. Epilogue: cormorants, humans
and the symposium process. Colonial Waterbirds. 18 (Special Publication 1): 255-256
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
Nettleship, D.N. and D.C. Duffy. 1995. Cormorants and human
interactions: an introduction. Colonial Waterbirds. 18 (Special Publication 1): 3-6
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. 1995. Apparent river otter
predation at an Aleutian tern colony. Colonial Waterbirds.
Duffy, D.C. 1994. Afterwards: an agenda for
managing seabirds and islands.
BirdLife Conservation Series. 1: 311-318
Grant, W.S., D.C. Duffy and R.W.
Leslie. 1994. Allozyme Phylogeny of Spheniscus Penguins.
The Auk. 111(3): 716-720
Duffy, D.C., D. D. Clark, S.R.
Campbell, S. Gurney, R. Perello and N. Simon. 1994. Landscape
patterns of abundance of Ixodes scapularis (Acari: Ixodidae)
on Shelter Island, New York. Journal of Medical Entomology.
Duffy, D.C., S.R. Campbell, D. Clark,
C. DiMotta and
S. Guerney. 1994. Ixodes scapularis (Acari: Ixoidae)
deer ticks mesoscale populations in natural areas: effects of deer,
area and location. Journal of Medical Entomology. 31:
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. 1994. Toward a world
strategy for seabird sanctuaries. Colonial Waterbirds. 17(2):
Duffy, D.C. and S.R. Campbell. 1994. Ambient air temperature as a predictor of activity of adult Ixodes
scapularis (Acari: Ixoidae) on Shelter Island, New York.
Journal of Medical Entomology. 31: 875-879
Duffy, D.C. and Schneider. 1994. Seabird-fishery interactions: a manger's guide. In D. N. Nettleship, J. Burger and M. Gochfeld
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. 1993. Herbs and
Clearcutting: Reply to Elliot and Loftis and Steinbeck. Conservation
Biology. 7(2): 221-223
Mather, T.N., D.C. Duffy and S.R.
Campbell. 1993. An Unexpected Result from Burning Vegetation to
Reduce Lyme Disease Transmission Risks. Journal of Medical
Entomology. 30(3): 642-645
Duffy, D.C. 1993. Seeing
the forest for the trees: response to Johnson et al.
Conservation Biology. 7(2): 436-439
Duffy, D.C. 1993. Stalking the Southern oscillation: environmental
uncertainty, climate change and North Pacific seabirds. IN Vermeer, K., K. T. Briggs, K. H. Morgan and D.
Siegel-Causey (Eds.). The status, ecology and conservation
of marine birds of the North Pacific. Special publication of
the Canadian Wildlife Service. pp. 61-67
Via, J. and D.C. Duffy. 1992.
Gull-billed Tern Sterna nilotica. In K. J. Schneider
and D. M. Pence, (Eds.). Migratory nongame birds of
management concern in the Northeast. U.S. Department of the
Interior – Fish and Wildlife Service, Newton Corner, MA. pp.1-13
Duffy, D.C. and D.N. Nettleship. 1992.
Seabirds: management problems and research opportunities. In:
D. R. McCullough and R. H. Barrett (eds.), Wildlife 2001:
populations. Elsevier Applied Science, London and New York. pp.
Schneider, D.C., D.C. Duffy, A.D.
MacCall, and D.W. Anderson. 1992. Seabird-fisheries interactions:
evaluation with dimensionless ratios. In: D. R. McCullough
and R. H. Barrett (eds.), Wildlife 2001: populations.
Elsevier Applied Science, London and New York. pp. 602-615
Duffy, D.C. 1992. Biodiversity and
Research on Seabirds. Colonial Waterbirds.15(1): 155-
Duffy, D.C. 1992. The effectiveness of Helmeted Guineafowl in the control of the
deer tick, the vector of Lyme disease. Wilson Bulletin. 104(2): 342-345
Duffy, D.C. and A.J. Meier. 1992. Do Appalachian herbacious understories ever recover from clearcutting?
Conservation Biology. 6: 196-201
Duffy, D.C. 1991. Field Studies of
Spheniscus Penguins. Spheniscus Penguin Newsletter. Pages
Duffy, D.C. 1991. Ants, ticks and
nesting seabirds: dynamic interactions? IN Loye, J.E. and M.
Zuk (Eds.) Bird-parasite Interactions: Ecology, Evolution
and Behavior. Oxford University Press, Oxford, UK. pp. 242-257
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
Duffy, D.C. 1990. Climate Change, rising sea level and the
Galapagos. World Wildlife Fund Special Report on Climate Change. pp. 6-7
Duffy, D.C. November 1989. Letter to the editor.
E. coli rights. New Scientist. 1691: 71
Duffy, D.C. 1989. William Vogt: a pilgrim on
the road to survival. American Birds. New Series. 43 (9):
Duffy, D.C. 1989. Letter to the editor.
Carbon-Sequestering Science: An Alternative to "Pesky Electronics"?
Science. New Series. 244(4907): 904
Duffy, D.C. 1989. Seabird
foraging aggregations: a comparison of two southern upwellings.
Colonial Waterbirds. 12(2): 164-179
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.
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
Scandinavica. 19: 160-163
Duffy, D.C., Arntz, Tovar, Boersma and Norton. 1988. The effects of El
Nino and the Southern Oscillation on seabirds in the Atlantic Ocean
compared to the events in Peru. Acta XIX Ino. Ornith. Congress. pp. 1740-1746
Duffy, D.C., Heseltine and La Cock. 1988.
Food size and aggressive interactions between two species of gulls:
an experimental approach to resource partitioning.
Ostrich. 58: 164-167
Duffy, D.C. and M.J. Duffy. January 1988. Boletin de Aves Marinas
Duffy, D.C. and M.J. Duffy. August 1988. Boletin de Aves Marinas
Duffy, D.C. and M.J. Duffy. December 1988. Boletin de Aves
Duffy, D.C. and Wissel. 1988. Models
of fish school size in relation to environmental productivity.
Ecological Modeling. 40: 201-211
Schneider, D.C., D.C. Duffy and G.L.
Hunt, Jr. 1988. Cross-shelf gradients in the abundance of pelagic
IN Ouellet, H. (Ed.) Acta XIX Congressus
Internationalis Ornithologici Volume I. Published for National
Museum of Natural Sciences by University of Ottawa Press. pp.
Butterworth, D.S., D.C. Duffy, P.B. Best and
1988. On the scientific basis for reducing the South African seal
population. South African Journal of Science. 84: 179-188
Duffy, D.C., R.P. Wilson, R.E. Wicklefs, S.C. Broni and H.
Veldhuis. 1987. Penguins and purse seiners: competition or
coexistence? National Geographic. 3(4): 480-488
Araya. B. and D.C. Duffy. Animal introductions to Isla Chanaral,
Chile: Their history and effect on seabirds. 1987. Cormorant15: 3-6
Duffy, D.C. 1987. Aspects of the Ecology of Blue-footed and Peruvian
Boobies at the Limits of their Ranges on Isla Lobos de Tierra, Peru.
Colonial Waterbirds. 10 (1): 45-49
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. Submarine foraging behavior of Alcids in an artifical
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. and A. Daturi. 1987. Diel rhythms of tick parasitism on
incubating African penguins. Medical and Veterinary Entomology.
Duffy, D.C. and W.R. Siegfried. 1987. Historical variations in food
consumption by breeding seabirds of the Humboldt and Benguela
IN Croxall, J. P. (Ed.) Seabirds: feeding biology and
role in marine ecosystems. Cambridge University Press. pp.
Duffy, D.C. and M.J. Duffy. May 1987. Boletin de Aves Marinas
Duffy, D.C. and M.J. Duffy. August 1987. Boletin de Aves Marinas
Jackson, S., D.C. Duffy and J.F.G.
Jenkins. 1987. Gastric digestion in marine vertebrate predators:
in vitro standards. Functional Ecology. 1: 287-291
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:
Duffy, D.C. 1986. Foraging at patches: interactions between Common
Terns. Ornis Scandinavica 17:47-52
Wilson, R.P., W.S. Grant and D.C. Duffy. 1986. Recording devices on
free-ranging marine animals: Does measurement affect foraging
performance? Ecology67(4): 1091-1093
Duffy, D.C. 1986. Seabirds and
commercial fisheries: research at the Percy Fitzpatrick Institute of
African Ornithology. Bokmakierie. 38(1): 10-12
Duffy, D.C. and S. Jackson. 1986. Diet studies of seabirds: A review
of methods. Colonial Waterbirds.
Laugksch, R.C. and D.C. Duffy. 1986.
Food transit rates in cape gannets and jackass penguins. The
Condor 88: 117-119
Duffy, D. C. and M. J. C. Duffy. 1986. Tick parasitism at nesting colonies of blue-footed boobies
in Peru and the Galapagos. The Condor.88: 242-244
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. and M.J. Duffy. May 1986. Boletin de Aves Marinas
Duffy, D.C., M.J. Duffy and Coulter. August 1986. Boletin de Aves
Duffy, D.C. 1986. Galapagos literature - fact
and fantasy. Noticias de Galapagos44: 18-20
Wilson, R.P. and D.C. Duffy. 1986. Short Note. Prey seizing in
African penguins Spheniscus demersus. Ardea.
S.C. Broni , M. Kaicener , D.C. Duffy. Autumn
1985. The Effect of Wind Direction on Numbers of Seabirds Seen
During Shipboard Transects. Journal of Field Ornithology
Duffy, D.C. and Percy Fitzpatrick. Spring 1985.
A penguin puzzle. Quagga 11: 8-9.
Duffy, D.C. and Graeme D. LaCock. 1985.
Partitioning of nesting space among seabirds of the Benguela
upwelling region. Ostrich56: 186-201.
Schneider, D.C. and D.C. Duffy. 1985.
Scale-dependent variability in seabird abundance. Mar. Ecol. Prog.
Ser. 25: 211-218
Duffy, D.C., Wilson and Berruti. 1985. Anchovy in the diets of Dyer
Island Penguins: a tests of two models of anchovy distribution. South African Journal of Science.81: 552-554
Duffy, D.C. Coppelia Hays and Manuel A. Plenge.
1984. The Conservation Status of Peruvian Seabirds. ICBP
Technical Publication No. 2: 245-259
R. C. Laugksch & D.C. Duffy. 1984.
Energetics equations and food consumption of seabirds in two marine
upwelling areas: comparisons and the need for standardization,
South African Journal of Marine Science, 2:1, 145-148
Duffy, D.C. and T. Hecht. 1984. Ship-followers
and seabirds counts: observer's distance from stern may affect
Cormorant No. 12: 44-88
Duffy, D.C. and T. Hecht. 1984. Nest site selection
by masked and blue-footed boobies on Isla Espanola, Galapagos.
The Condor 86: 301-304
Duffy, D.C. 1984. Nest site selection
by masked and blue-footed boobies on Isla Espanola, Galapagos.
The Condor 86: 301-304
Ricklefs, Duffy, D.C. and Coulter. 1984.
Weight gain of blue-footed booby chicks: an indication of marine
resources. Ornis Scandinavica. 15: 162-166
Duffy, D.C. July 1983. Competition for nesting space among Peruvian
guano birds. The Auk. 100: 680-668
Duffy, D.C. 1983. Environmental uncertainty and commercial fishing:
effects on Peruvian guano birds. Biological Conservation.26: 227-238
Duffy, D.C. 1983. The foraging ecology of
Peruvian seabirds. Auk.100: 800-810
Duffy, D. C. 1983. The
ecology of tick parasitism on densely nesting Peruvian seabirds. Ecology.
Duffy, D.C. and A.J. Boyd. 1983. Anchovy
distribution and migration. South African Journal of Science.
Duffy, D.C. and L.J.B. Laurenson. 1983. Pellets of
Cape cormorants as indicators of diet. Condor. 85:
Duffy, D.C. 1982. Seasnakes in Galapagos.
Noticias de Galapagos35: 23-23
Duffy, D.C. 1981. A master plan for ornithology
in the Galapagos Islands. Noticias de Galapagos34:
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):
Duffy, D.C. N. Atkins and D.C. Schneider. 1981.
Do shorebirds compete on their wintering grounds? Auk. 98:
1981. Water water anywhere: The search for the potable in Galapagos.
Noticias de Galapagos34: 19-19
1981. Ferals that Failed. Noticias de Galapagos33:
Duffy, D. and S. Harcourt. 1980. An investigation of avian pox
disease: its distribution and effects on Galapagos birds. pp.
108-111 in D. C. Duffy, D. J. Reynaolds, and M. J. Campos(eds.)
Annual Report. 1980. Charles Darwin Research Station, Santa Cruz
Duffy, D.C. and N. Atkins. 1979. A second breeding record for the
grey-hooded gull (Larus
cerrocephalus) on the coast of Peru. Condor.
Duffy, D.C. October 1979. Human Disturbance and Breeding Birds.
96 (4): 815-816
Duffy, D.C. October 1977. Breeding Populations of Terns and Skimmers
on Long Island Sound and Eastern Long Island: 1972-1975.
Proceedings of the Linnaean Society of New York for three years
ending March 1977: 1-48
Duffy, D.C. 1977. Incidence of Oil Contamination on Breeding Common
Bird-Banding. 48 (4): 170-171
Duffy, D.C. October 1976. Snowy Owl steals prey from Marsh Hawk.
93 (4): 839-840
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