• Professor, School Of Biological Sciences


  • Beausoleil, M-O. & V. D. Fiorini, I. Crudele, J. C. Reboreda, S. A. Pladas, A. P. Watson, S. E. Bush, and D. H. Clayton (2023). The fitness landscape of a community of Darwin’s finches. Evolution. Vol. 77, 2533-2546. Published, 12/2023.
  • Herman, J. M. & V. D. Fiorini, I. Crudele, J. C. Reboreda, S. A. Pladas, A. P. Watson, S. E. Bush, and D. H. Clayton (2023). Co-parasitism in the face of predation: Effects of natural enemies on a neotropical mockingbird. Journal of Animal Ecology. DOI: 10.1111/1365-2656.13991. Published, 08/2023.
  • Bush, S. E. & M. M. Waller, J. M. Herman, K. S. Hobbs, A. R. Clayton, J. Watson, M. D. Oleyar, and D. H. Clayton (2023). Birds groom more in geographic regions with higher parasite pressure: A comparison of temperate and subtropical American kestrels. Animal Behaviour. Vol. 201, 125-135. Published, 07/2023.
  • Bush, S. E. & D. H. Clayton (2023). Does preening behavior reduce the prevalence of avian feather lice (Phthiraptera: Ischnocera)? . J. Parasitology. Vol. 109, 145-147. Published, 05/2023.
  • Bush, S.E. & D.H. Clayton (2023). Grooming time predicts survival: American kestrels, Falco sparverius, on a sub-tropical island. American Naturalist. Vol. 201, 603-609. Published, 04/2023.
  • Carrión, P. L. & J.A.M. Raeymaekers, L.F. De León, J. Chaves, D. M.T. Sharpe, S. K. Huber, A. Herrel, B. Vanhooydonck, K. M. Gotanda, J.A.H. Koop, S. A. Knutie, D. H. Clayton, J. Podos and A. P. Hendry (2022). The terroir of the finch: How spatial and temporal effects shape phenotypic variation In Darwin’s finches. Ecology and Evolution. Vol. 12. Published, 10/2022.
  • Boyd, B.M. & N. Nguyen, J. M. Allen, R. M. Waterhouse, K. B. Vo, A. D. Sweet, D. H. Clayton, S. E. Bush, M. D. Shapiro, and K. P. Johnson (2022). Long-distance dispersal of pigeons and doves generated new ecological opportunities for host-switching by their parasites. Proceedings of the Royal Society B. Vol. 289. Published, 03/2022.
  • McNew, S & T. Boquete, S. Espinoza-Ulloa, J. Andres, N. Wagemaker, S. Knutie, C. Richards, and D. H. Clayton (2021). Epigenetic effects of parasites and pesticides on captive and wild nestling birds. Ecology and Evolution. Vol. 11, 7713-7729. Published, 05/2021.
  • Bush, S. E. & D. R. Gustafsson, V. V. Tkach, and D. H. Clayton (2021). Critical comment: The misidentification crisis plagues specimen-based research: A case for guidelines with a recent example (Ali et al. (2020). Journal of Parasitology. Vol. 107, 262-266. Published, 03/2021.
  • Baldwin-Brown J.G. & S. M. Villa, A. Vickery, K. P. Johnson, S. E. Bush, D. H. Clayton, and M. D. Shapiro (2021). The assembled and annotated genome of the pigeon louse Columbicola columbae, a model ectoparasite. G3: Genes|Genomes|Genetics. Published, 01/2021.
  • McNew, S. M & G. B. Goodman, J. Yépez, and D. H. Clayton (2020). Parasitism by an invasive nest fly reduces future reproduction in Galápagos mockingbirds. Oecologia. Published, 02/2020.
  • Goodman, G. B. & S. A. Conner, S. E. Bush, and D. H. Clayton (2020). Is allopreening a stimulus-driven defense against ectoparasites? . J. Parasitology. Published, 02/2020.
  • McNew, S. M. & McNew, S. M., S. A. Knutie, and D. H. Clayton (2020). Galápagos mockingbirds do not bias sex ratios of offspring in response to environment. J. Avian Biology. Published, 02/2020.
  • Goodman, G. B & M. C. Klingensmith, S. E. Bush, and D. H. Clayton (2020). The role of scratching in the control of ectoparasites on birds. Auk: Ornithological Advances. Published, 02/2020.
  • Beausoleil, M.-O., L. O. Frishkoff, L. K. M'Gonigle, J. A. M. Raeymaekers, S. A. Knutie, L. F. De León, S. K. Huber, J. A. Chaves, D. H. Clayton, J. A. H. Koop, J. Podos, D. M. T. Sharpe, A. P. Hendry, and R. D. H. Barrett. 2019. Temporally varying disruptive selection in the medium ground finch (Geospiza fortis). Proceedings of the Royal Society B: Biological Sciences 286:20192290–10. Published, 08/2019.
  • Villa, S. M. , J. C. Altuna, J. S. Ruff, A. B. Beach, L. I. Mulvey, E. J. Poole, H. E. Campbell, K. P. Johnson, M. D. Shapiro, S. E. Bush and D. H. Clayton. 2019. Experimental evolution of reproductive isolation from a single natural population. Proc. Natl. Acad. Sci. 116 (27) 13440-13445. Featured “In This Issue” https://www.pnas.org/content/116/27/13147 Recommended by Faculty of 1000.. Published, 06/2019.
  • Bush, S. E., S. M. Villa, J. C. Altuna, K. P. Johnson, M. D. Shapiro and D. H. Clayton. 2019. Host defense triggers rapid adaptive radiation in experimentally evolving parasites. Evolution Letters 3-2: 120–128. Recommended by Faculty of 1000. Press coverage in The Atlantic: https://www.theatlantic.com/science/archive/2019/03/unusual-evolutionary-experiment/584692/ Commentary in Journal of Experimental Biology 2019 222: jeb192815 doi: 10.1242/jeb.19281. Published, 03/2019.
  • McNew S.M., S. A. Knutie, G. B. Goodman, A. Saulsberry, A. Theodosopoulos, J. R. Yépez, S. E. Bush and D. H. Clayton 2019. Annual environmental variation influences host tolerance of parasites. Proceedings of the Royal Society B. https://doi.org/10.1098/rspb.2019.0049. Published, 02/2019.
  • Gustafsson, D. R., D. H. Clayton, and S. E. Bush. 2019. Twelve new species of Guimaraesiella Eichler, 1949 (Phthiraptera: Ischnocera: Philopteridae) from “babblers” (Passeriformes: Leiothrichidae, Pellorneidae, Timaliidae), with a description of a new subgenus. Zootaxa 4543: 451–497. Published, 01/2019.
  • Villa, S. M & J. A. H. Koop, C. Le Bohec and D. H. Clayton (2018). Beak of the pinch: Anti-parasite traits are similar among Darwin’s finch species. Evolutionary Ecology. Vol. 32, 443-452. Published, 08/2018.
  • Bush, S.E. & D. R. Gustafsson and D. H. Clayton (2018). New records of ectoparasites from passerine birds in the High Tatras of Slovakia. Oecologia Montana. Vol. 27, 43-45. Published, 07/2018.
  • Bush, S.E. (2018). Anti-parasite behavior of birds. Philosophical Transactions of the Royal Society of London B. Published, 06/2018.
  • DiBlasi, E.K. & K. P. Johnson, S.A. Stringham, A.N. Hansen, A.B. Beach, D.H. Clayton and S.E. Bush (2018). Phoretic dispersal influences parasite population genetic structure. Molecular Ecology. Published, 05/2018.
  • Villa, S. M & J. D. Evans, Y. K. Subhani, J. C. Altuna, S. E. Bush and D. H. Clayton (2018). Body size and fecundity are correlated in feather lice (Phthiraptera: Ischnocera): Implications for Harrison’s Rule. Ecol. Entomol. Published, 03/2018.
  • Gustafsson, D.R. & D. H. Clayton, and S. E. Bush (2018). Twelve new species of Priceiella Gustafsson & Bush, 2017 (Phthiraptera: Ischnocera: Philopteridae) from Old World babblers, with a key and comprehensive host-parasite checklist. Zootaxa. Vol. 4382, 401-449. Published, 02/2018.
  • McNew, S.M. & D. H. Clayton (2018). Alien invasion: Biology of Philornis flies highlighting P. downsi, an introduced parasite of Galapagos birds. Annual Review of Entomology. Vol. 63, 369-387. Published, 01/2018.
  • Boyd, B. M. (2017). Phylogenomics using target restricted assembly resolves intra-generic relationships of parasitic lice (Phthiraptera: Columbicola). Systematic Biology. Published, 11/17/2017.
  • McNew, S. M. (2017). Alien invasion: Biology of Philornis flies highlighting P. downsi, an introduced parasite of Galapagos birds. Annual Review of Entomology. Published, 10/20/2017.
  • Heimpel, G. E (2017). Invasive parasites and the fate of Darwin’s finches in the Galapagos Islands: the case of the Vegetarian Finch. Wilson Journal of Ornithology. Vol. 129, 345-349. Published, 09/17/2017.
  • McNew, S. M. (2017). Epigenetic variation between urban and rural populations of Darwin’s finches. BMC Evolutionary Biology. Published, 08/24/2017.
  • Knutie, S. A. (2017). Tri-trophic ecology of native parasitic nest flies of birds in Tobago. Ecosphere-Open Access Journal. Published, 01/27/2017.
  • Does allopreening control avian ectoparasites? Biology Letters 12: 20160362. http://dx.doi.org/10.1098/rsbl.2016.0362. Published, 07/26/2016.
  • Galápagos mockingbirds tolerant introduced parasites that threaten Darwin’s finches. Ecology 97:940-950. Published, 04/08/2016.
  • Does anti-parasite behavior improve with experience? Experimental test of the priming hypothesis. Behavioural Ecology doi: 10.1093/beheco/arw032. Published, 03/15/2016.
  • Clayton, D. H., S. E. Bush and K. P. Johnson. 2016. Coevolution of life on hosts: Integrating ecology and history. University of Chicago Press. 320 pages, 16 color plates, 110 halftones, 3 line drawings, 4 tables. Published, 12/2015.
  • Koop, J. A. H., P. S. Kim, S. A. Knutie, F. Adler and D. H. Clayton. 2015. Introduced parasitic fly may lead to local extinction of Darwin’s finch populations. Journal of Applied Ecology. doi: 10.1111/1365-2664.12575 Press coverage: Covered by BBC News, Smithsonian, Christian Science Monitor, Huffington Post, DailyMail, Fusion, MentalFloss and many others. Published, 06/2015.
  • Skinner, M. A., C. Gurerrero-Bosagna, Md M. Haque, E. E. Nilsson, J. A. H. Koop, Sarah A. Knutie and D. H. Clayton. 2014. Epigenetics and the evolution of Darwin's finches. Genome Biology and Evolution 6: 1972-1989. Published, 07/24/2014.
  • J.P. Owen, J. L. Waite, K. Z. Holden and D.H. Clayton. 2014. Does antibody binding to novel proteins predict future infection? (Invited article for special issue concerning immunology and ectoparasites). Parasite Immunology 36: 571-582. Published, 06/03/2014.
  • Ghosh, S., J.L. Waite, D. H. Clayton and F.R. Adler. 2014. Can antibodies against flies alter malaria transmission in birds by changing vector behavior? Journal of Theoretical Biology 358: 93-101. Published, 05/29/2014.
  • Knutie, S. A., S. M. McNew, A. W. Bartlow, D. Vargas, and D. H. Clayton. 2014. Darwin’s finches combat introduced nest parasites with fumigated cotton. Current Biology 24: R355–R356. Recommended by Faculty of 1000 Press coverage: Featured by Reuters, Science, Nature, National Public Radio, Scientific American, National Geographic, CBC Quirks & Quarks & many others. Published, 05/06/2014.
  • Waite, J.L., A.R. Henry, J.P. Owen and D.H. Clayton. 2014. An experimental test of the effects of behavioral and immunological defenses against vectors: do they interact to protect birds from blood parasites? Parasites & Vectors 7:104. Published, 03/04/2014.
  • Diversity of feather mites (Acari: Astigmata) on Darwin's Finches. J. Parasitology 99: 756-762. Published, 06/01/2013.


  • Raptor Research Foundation, Albuquerque, NM. Contributed Talk, Presented, 09/2023.
  • Animal Behavior Society, Portland OR. Contributed Talk, Presented, 09/2023.
  • American Ornithological Society. Invited Talk/Keynote, Presented, 08/2023.
  • Environment, Epigenetics and Reproduction, Kenya, Africa. Invited Talk/Keynote, Presented, 07/2022.
  • Ecology and Evolutionary Biology, Univ. of California, Santa Cruz (by Zoom). Invited Talk/Keynote, Presented, 05/2020.
  • Bessey Lecture, Dept. of Ecol., Evol. & Organismal Biol., Iowa State U., Ames . Invited Talk/Keynote, Presented, 02/2020.
  • TFR Seminar, School of Biological Sciences, University of Utah, Salt Lake City. Invited Talk/Keynote, Presented, 02/2020.
  • EEOB/EEB Interdepartmental Program seminar, Iowa State U. Ames, Iowa. Invited Talk/Keynote, Presented, 02/2020.
  • Guest lecture, Gerace Research Center, University of the Bahamas, San Salvador. Invited Talk/Keynote, Presented, 08/2019.
  • International Ornithological Congress, Vancouver, Canada. Invited Talk/Keynote, Presented, 08/2018.
  • 6th International Congress on Phthiraptera, Brno, Czech Republic. Contributed Talk, Presented, 06/2018.
  • Society for the Study of Evolution, Portland OR. Presentation, Presented, 10/20/2017.
  • American Museum of Natural History, New York. Invited Talk/Keynote, Presented, 08/24/2017.
  • Museum of Vertebrate Zoology, University of California, Berkeley. Invited Talk/Keynote, Presented, 06/20/2017.
  • Plenary lecture, Entomological Society of Canada Annual Meeting, Winnipeg. Invited Talk/Keynote, Presented, 05/10/2017.
  • Illinois Natural History Survey, University of Illinois, Urbana. Invited Talk/Keynote, Presented, 04/01/2017.
  • Douglas Schemske Retirement Symposium, University of Illinois, Chicago. Invited Talk/Keynote, Presented, 03/24/2017.
  • North American Ornithological Conference, Washington D. C. Contributed Talk, Presented, 08/15/2016.
  • Ecology and Evolutionary Biology class, University of Connecticut (Skype). Presentation, Presented, 08/01/2016.
  • Centre Méditerranéen Environnement et Biodiversité, Montpellier, France. Invited Talk/Keynote, Presented, 07/01/2016.
  • Society for the Study of Evolution, Austin TX . Contributed Talk, Presented, 05/01/2016.
  • Larada Sciences, 4rd Service Provider Summit, Park City, Utah . Invited Talk/Keynote, Presented, 04/01/2016.
  • Institute for High Mountain Biology, Žilina University, Slovak Republic. Invited Talk/Keynote, Presented, 06/2015.
  • Hungarian Natural History Museum, Budapest. Invited Talk/Keynote, Presented, 06/2015.
  • Dept. of Biology, University of Tulsa, Oklahoma. Invited Talk/Keynote, Presented, 05/2015.
  • Larada Sciences, 3rd Service Provider Summit, Park City, Utah. Invited Talk/Keynote, Presented, 04/2015.
  • Galápagos symposium, AAAS Pacific Division, San Francisco (Knutie). Invited Talk/Keynote, Presented, 04/2015.
  • Departmental Seminar, Dept. of Biology, University of Utah, Salt Lake City. Invited Talk/Keynote, Presented, 03/2015.
  • Microbial Pathogenesis Seminar Series, University of Utah, Salt Lake City. Invited Talk/Keynote, Presented, 03/2015.
  • Arthropods & Wildlife symposium, Entomol. Soc. America, Minneapolis (Knutie). Presentation, Presented, 01/2015.