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Watts Lab Publications

Generally a journal subscription is necessary to download the papers using the links below. But, I’d be happy to provide a pdf version if you contact me directly (click here to request pdf).

Names of supervised undergraduate student, graduate student, and postdoctoral scholar co-authors are underlined.

Vernasco, B. J., Cornelius, J. M. & Watts, H E. 2024 Food and social cues modulate reproductive development but not migratory behavior in a nomadic songbird, the Pine Siskin. Ornithology 141: ukae006

Watts, H. E. & Cornelius, J. M. 2024. Toward understanding the endocrine regulation of diverse facultative migration strategies. Hormones and Behavior 158: 105465

Boersma, J., Enbody, E.D., Ketaloya, S., Watts, H. E., Karubian, J. & Schwabl, H. 2023. Does capacity to produce androgens underlie variation in female ornamentation and territoriality in White-shouldered Fairywren (Malurus alboscapulatus)? Hormones and Behavior 154: 105393

Robart, A. R. & Watts, H. E. 2023. Integration of social and temperature cues alters facultative migratory response to declining food availability. Animal Behaviour 198:153-164.

Boersma J., Enbody E. D., Karubian, J., Watts, H. E. & Schwabl, H. 2022. Drought disrupts year-round breeding readiness in a tropical songbird. Avian Conservation and Ecology 17 (2): 44.

Vernasco, B. J., Cornelius, J. M. & Watts, H E. 2022. Social information use in migratory decision-making depends upon conspecific state. Behavioral Ecology and Sociobiology 76: 130.

Vernasco, B. J. & Watts, H. E. 2022. Telomere length predicts timing and intensity of migratory behaviour in a nomadic songbird. Biology Letters 18: 20220176.

Robart, A. R., Zuñiga, H. X., Navarro, G. & Watts, H. E. 2022. Social environment influences termination of nomadic migration. Biology Letters 18: 20220006.

Chmura, H. E., Schultz, E. M., Brazeal, K. R., Watts, H. E., MacDougall-Shackleton, S. A., Hahn, T.P. & Cornelius, J. M., 2021. Annual Schedules. In: Sturkie’s Avian Physiology, 7th Edition (C. G. Scanes & S. Dridi, Eds). San Diego: Elsevier.


Bauer, C.M. & Watts, H.E. 2021. Corticosterone’s roles in avian migration: Assessment of three hypotheses. Hormones and Behavior 135: 105033.



Aguiñaga, J., Gomulkiewicz, R. & Watts, H.E. 2021. Effect of social information on an individual’s assessment of its environment. Animal Behaviour 178: 267-277.

Cornelius, J.M., Hahn, T.P., Robart, A.R., Vernasco, B.J., Zahor, J.L., Glynn, K.J., Corrie J. Navis, C.J. & Watts, H.E. 2021. Seasonal patterns of fat deposits in relation to migratory strategy in facultative migrants. Frontiers in Ecology and Evolution 9: 691808.

Vernasco, B.J., Emmerson, M.G., Gilbert, E.R., Sewall, K.B. & Watts, H.E. 2021. Migratory state and patterns of steroid hormone regulation in the pectoralis muscle of a nomadic migrant, the pine siskin (Spinus pinus). General and Comparative Endocrinology 309: 113787.

Watts, H. E. 2020. Seasonal regulation of behaviour: What role do hormone receptors play? Proceedings B 287: 20200722.

Hotaling, S., Wimberger, P.H., Kelley, J. L. & Watts, H.E. 2020. Macroinvertebrates on glaciers: a key resource for terrestrial food webs? Ecology 101: e02947.

Watts, H. E., Rittenhouse, J. L., Sewall, K. B., Bowers, J. M. 2019. Migratory state is not associated with differences in neural glucocorticoid or mineralocorticoid receptor expression in pine siskins. Animal Migration 6: 19–27.

Rittenhouse J. L., Robart, A. R. & Watts, H. E. 2019. Variation in chronotype is associated with migratory timing in a songbird. Biology Letters 15: 20190453.

Robart, A. R., Morado, M. I., Watts, H. E. 2019. Declining food availability, corticosterone, and migratory response in a nomadic, irruptive migrant. Hormones and Behavior 110: 56-67.

Watts, H. E., Jimenez, D., Pacheco, V. & Vilgalys, T. P. 2019. Temperature-correlated shifts in the timing of egg laying in House Finches Haemorhous mexicanus. Ibis 161: 428–434.

Watts, H. E., Jimenez, D., Pacheco, V. & Vilgalys, T. P. 2018. Effects of temperature on the timing of breeding and molt transitions in house finches. Journal of Experimental Biology 221: jeb185058.

Robart, A.R., McGuire, M. & Watts, H.E. 2018. Increasing photoperiod stimulates the initiation of spring migratory behaviour and physiology in a facultative migrant, the pine siskin. Royal Society Open Science 5: 180876.

Watts, H.E. 2018. Migration and Navigation in Birds. In M. K. Skinner (Ed.), Encyclopedia of Reproduction. vol. 6, pp. 90–94. Academic Press: Elsevier.

Watts, H.E., Cornelius, J.M., Fudickar, A.M., Pérez, J. & Ramenofsky, M. 2018. Understanding variation in migratory movements: A mechanistic approach. General and Comparative Endocrinology 256: 112-122.

Squire, M. E., Veglia, M. K., Drucker, K. A., Brazeal, K., Hahn, T. P. & Watts, H. E. 2017. Estrogen levels influence medullary bone quantity and density in female house finches and pine siskins. General and Comparative Endocrinology 246: 249-257.

Watts, H. E., Robart, A. R., Chopra, J. K., Asinas, C. E., Hahn, T. P., Ramenofsky, M. R. 2017. Seasonal expression of migratory behavior in a facultative migrant, the pine siskin. Behavioral Ecology and Sociobiology 71: 9.

Watts, H. E., Edley, B. & Hahn, T. P. 2016. A potential mate influences reproductive development in female, but not male, pine siskins. Hormones and Behavior. 80: 39-46.




Watts, H. E., MacDougall-Shackleton, S. A., & Hahn, T. P. 2015. Variation among individuals in photoperiod responses: Effects of breeding schedule, photoperiod, and age-related photoperiodic experience in birds. Journal of Experimental Zoology Part A: Ecological Genetics and Physiology. 323: 368-374.



MacDougall-Shackleton, S. A., Watts, H. E. & Hahn, T. P. 2015. Biological Timekeeping: Individual Variation, Performance, and Fitness. In: Integrative Organismal Biology (L. B. Martin, C. Ghalambor & H. A. Woods, Eds.). John Wiley & Sons, Inc.

Hahn, T.P., Brazeal, K. R., Schultz, E. M., Chmura, H. E., Cornelius, J. M., Watts, H. E. & MacDougall-Shackleton, S. A. 2014. Annual Schedules. In: Sturkie’s Avian Physiology, 6th Edition (C. G. Scanes, Ed). New York: Elsevier.

Cornelius, J.M., Watts, H.E., Dingle, H. & Hahn, T.P. 2013. Obligate versus rich patch opportunism: Evolution and endocrine mechanisms. General and Comparative Endocrinology 190: 76-80.

Watts, H.E., & Hahn, T.P. 2012. Non-photoperiodic regulation of reproductive physiology in the flexibly breeding pine siskin (Spinus pinus). General and Comparative Endocrinology 178: 259-264.

Holekamp, K., Smith, J., Strelioff, C., Van Horn, R. & Watts, H. 2012. Society, demography and genetic structure in the spotted hyena. Molecular Ecology 21: 613-632.

Watts, H. E., Scribner, K. T., Garcia, H. & Holekamp, K. E. 2011. Genetic diversity and structure in two spotted hyena populations reflects social organization and male dispersal. Journal of Zoology 285: 281-291.

Watts, H. E., Blankenship, L. M., Dawes, S. E. & Holekamp, K.E. 2010. Responses of spotted hyenas to lions reflect individual differences in behavior. Ethology 116: 1199-1209.

MacDougall-Shackleton, S. A., Stevenson, T. J., Watts, H. E., Pereyra, M., Hahn, T. P. 2009. The evolution of photoperiodic response systems and seasonal GnRH plasticity in birds. Integrative and Comparative Biology 49: 580-589. link

Hahn, T. P., Watts, H. E., Cornelius, J. M. Brazeal, K. R. & MacDougall-Shackleton, S. A. 2009. Evolution of environmental cue response mechanisms: Adaptive variation in photorefractoriness. General and Comparative Endocrinology 163: 193-200. link

Watts, H. E., Tanner, J. B., Lundrigan, B. L. & Holekamp, K. E. 2009. Post-weaning maternal effects and the evolution of female dominance in the spotted hyena. Proceedings of the Royal Society B 276:2291-2298. link Faculty of 1000 ‘Must Read’

Watts, H. E. & Holekamp, K. E. 2009. Ecological determinants of survival and reproduction in the spotted hyena. Journal of Mammalogy 90: 461-471. link

Van Meter, P. E., French, J. A.., Dloniak, S. M., Watts, H. E. & Holekamp, K. E. 2009. Fecal glucocorticoids reflect socio-ecological and anthropogenic stressors in the lives of wild spotted hyenas. Hormones and Behavior 55: 329-337. link

Watts, H. E. & Holekamp, K. E. 2008. Interspecific competition influences reproduction in spotted hyenas. Journal of Zoology 276: 402-410. link

Van Horn, R. V., Watts, H. E. & Holekamp, K. E. 2008. Do female hyaenas choose mates based on tenure? Nature 454 doi:10.1038/nature07122. link

Watts, H. E. & Holekamp, K. E. 2007. Hyena societies. Current Biology 17: R657-R660. link

Boydston, E. E., Kapheim, K. M., Watts, H. E., Szykman, M. & Holekamp, K. E. 2003. Altered behavior in a large African carnivore associated with increased human activity. Animal Conservation 6: 207-219. link

Alberts S. C., Watts, H. E. & Altmann, J. 2003. Queuing and queue jumping: Long-term patterns of dominance rank and mating success in male savannah baboons. Animal Behaviour 65: 821-840. link