Tetzlaff, S.J., J.H. Sperry, and B.A. DeGregorio. 2019. Effects of antipredator training, environmental enrichment, and soft release on wildlife translocations: a review and meta-analysis. Biological Conservation 236: 324–331.

MacDonald, S.E., Ward, M.P. and Sperry, J.H., 2019. Manipulating social information to promote frugivory by birds on a Hawaiian Island. Ecological Applications, p.e01963.

Gleditsch, J.M. and Sperry, J.H. 2019. Rapid morphological change of non-native frugivores on the Hawaiian island of O’ahu. Evolution, 73: 1456-1465. doi:10.1111/evo.13744

Vizentin-Bugoni, J., C.E. Tarwater, J.T. Foster, D.R. Drake, J.M. Gleditsch, A.M. Hruska, J.P. Kelley, and J.H. Sperry 2019. Structure, spatial dynamics, and stability of novel seed dispersal mutualistic networks in Hawaiʻi. Science 364(6435): 78-82.

Tetzlaff, S.J., J.H. Sperry, and B.A. DeGregorio. 2018. Attempted depredation of a juvenile Eastern Box Turtle, Terrapene carolina (Linnaeus, 1758), by Sandhill Cranes, Antigone canadensis (Linnaeus, 1758). Herpetology Notes 11: 589–591.

Buxton, V.L., W.M. Schelsky, T.J. Boves, S. Summers, P.J. Weatherhead, and J.H. Sperry. 2018. Effects of drought on brood parasite body condition, follicle development, and parasitism: implications for host-parasite dynamics. Auk, 135: 908-918.

Kovar, D., J.H. Sperry, D. Cimprich. 2018. Comparative reproductive ecology of co-occurring endangered and common shrubland birds. Wilson Journal of Ornithology, 130: 410-426.

Kovar, D.G., J.H. Sperry, and D.A. Cimprich. 2018. Effects of brush management on the reproductive ecology of endangered black-capped vireos. Southwestern Naturalist, 17: 270 - 285.

DeGregorio, B.A., M.J. Ravesi, J.H. Sperry, S.J. Tetzlaff, J. Josimovich, M. Matthews, and B.A. Kingsbury. 2018. Daily and seasonal activity patterns of the Eastern Massasauga (Sistrurus catenatus): An automated radio telemetry study. Herpetological Conservation and Biology, 13: 10-16..

Tetzlaff, S.J., J.H. Sperry, and B.A. DeGregorio. 2018. Captive-reared juvenile box turtles innately prefer naturalistic habitat: implications for translocation. Applied Animal Behaviour Science, 204: 128-133.

Buxton, V.L., M.P. Ward and J.H. Sperry. 2018. Evaluation of conspecific attraction as a management tool across several species of anurans. Diversity, 10: doi:10.3390/d10010006

Wolff, P.J., B.A. DeGregorio, V. Rodriguez-Cruz, E. Mulero-Oliveras, J.H. Sperry. 2018. Bird community assemblage and distribution in a tropical, urban ecosystem of Puerto Rico. Tropical Conservation Science, 11: 1-10.

Hays, B.R., J. Sperry, D.R. Drake and A.M. Hruska. 2018. Husking stations provide insight into diet of nonnative rodents on O'ahu Hawai'i. Pacific Science 72: 335-344.

DeGregorio, B.A., J.H. Sperry, T. Tuberville and P.J. Weatherhead. 2017. Translocating ratsnakes - does enrichment offset negative effects of time in captivity? Biological Conservation, Wildlife Research, 44: 438-448.

Buxton, V.L., M.P. Ward, and J.H. Sperry. 2017. Frog breeding pond selection in response to predator presence and conspecific cues. Ethology 123: 397-404.

Buxton, V.L., and J. H. Sperry. 2017. Reproductive decisions in anurans: a review of how predation and competition affects deposition of eggs and tadpoles. BioScience 67: 27-38.

DeGregorio, B.A., S.J. Chiavacci, T.J. Benson, J.H. Sperry, and P.J. Weatherhead. 2016. Nest predators of North American birds: continental patterns and implications. Bioscience 66: 655-665.PDF

DeGregorio, B.A., J.H. Sperry, and P.J. Weatherhead. 2016. Ecology and predation behavior of corn snakes at avian nests. Herpetological Conservation and Biology. 11: 150-159PDF

DeGregorio, B.A., P.J. Weatherhead, and J.H. Sperry. 2016. Does seasonal and daily activity of rat snakes and racers influence avian nest survival? Ecology and Evolution 2016: 870-889.PDF

DeGregorio, B.A., J.H. Sperry, and P.J. Weatherhead. 2015. Wait until dark? Daily activity patterns and nest predation by snakes. Ethology: 121: 1225-1234.PDF

Buxton, V. L., J. Kraft, and J. H. Sperry. 2015. Geographic distribution: Hyla wrightorum (Arizona treefrog). Herpetological Review 46: 556-578.

Buxton, V.L., M.P. Ward, and J.H. Sperry. 2015. Use of chorus sounds for location of breeding habitat in 2 species of anuran amphibian. Behavioral Ecology 26: 1011-1018. PDF

DeGregorio, B.A., J.D. Westervelt, P.J. Weatherhead, and J.H. Sperry. 2015. Indirect effect of climate change: shifts in ratsnake behavior alter timing and intensity of nest predation. Ecological Modelling 312: 239-246. PDF

Tuberville, T.D., K.M. Andrews, J.H. Sperry, and A.M. Grosse. 2015. Use of the NatureServe climate change vulnerability index as an assessment tool for reptiles and amphibians: Lessons learned. Environmental Management 56: 822-834. PDF

Dittmar, E.M., D.A. Cimprich, J.H. Sperry, and P.J. Weatherhead. 2014. Habitat selection by juvenile black-capped vireos following independence from parental care. Journal of Wildlife Management 78: 1005-1011. PDF

Boves, T.J., J.H. Sperry, K. Comolli, and P.J. Weatherhead. 2014. Brood parasitism of an endangered songbird: risks, responses, and implications for mangement. Journal of Field Ornithology 85: 364-378. PDF

DeGregorio, B.A., P.J. Weatherhead, and J.H. Sperry. 2014. Powerlines, roads, and nest survival: effects on predator identity and predation intensity. Ecology and Evolution 4: 1589-1600. PDF

DeGregorio, B.A., S.J. Chiavacci, P.J. Weatherhead, J.D. Willson, T.J. Benson, and J.H. Sperry. 2014. Snake predation of North American bird nests: culprits, patterns, and future directions. Journal of Avian Biology 45: 325-333. PDF

DeGregorio, B.A., J.H. Sperry, D.P. Valente, and P.J. Weatherhed. 2014. Facultative nocturnal behaviour in snakes: experimental examination of why and how with ratsnakes and racers. Canadian Journal of Zoology 93: 229-237. PDF

DeGregorio, B.A., S. R. Wendt, P.J. Weatherhead, and J.H. Sperry. 2014. PANTHEROPHIS ALLEGHENIENSIS (Eastern Ratsnake) Foraging Behavior. Herpetological Review 45: 142. PDF

DeGregorio, B.A., and J.H. Sperry. 2014. COLUBER CONSTRICTOR (North American Racer) Mortality. Herpetological Review 45: 146. PDF

DeGregorio, B.A., P.J. Weatherhead, T.D. Tuberville, and J.H. Sperry. 2013. Time in captivity affects foraging behavior of ratsnakes: implications for translocation. Herpetological Conservation and Biology 8: 581-590. PDF

Westervelt, J.D., J.H. Sperry, J.L. Burton, and J.G. Palis. 2013. Modeling response of Frosted Flatwoods Salamander populations to historic and predicted climate variables. Ecological Modeling 268: 18-24. PDF

Boves, T.J., J.A. Kutylowski, J.H. Sperry, and D.A. Cimprich. 2013. A novel behavior in an endangered species: Black-capped vireos reuse a nest after brood parasitism and depredation. American Midland Naturalist 170: 191-195. PDF

Ward, M.P., J.H. Sperry, and P.J. Weatherhead. 2013. Using automated radiotelemetry to quantify activity and movement patterns of snakes. Journal of Herpetology 47: 337-345. PDF

Sperry, J.H., M.P. Ward, and P.J. Weatherhead. 2013. Effects of temperature, moon phase, and prey on nocturnal activity of ratsnakes: An automated telemetry study. Journal of Herpetology 47: 105-111. PDF

Sperry, J.H., D.G. Barron, and P.J. Weatherhead. 2012. Effects of snake behavior on seasonal patterns of Northern Cardinal (Cardinalis cardinalis) nest survival. Journal of Avian Biology 43: 496-502. PDF

P.J. Weatherhead, B. Blouin-Demers, and J.H. Sperry.  2012. Mortality patterns and the cost of reproduction in a northern population of ratsnakes, Elaphe obsoleta. Journal of Herpetology 46: 100-103. PDF

P.J. Weatherhead, J.H. Sperry, G.F. Carfagno, and G. Blouin-Demers. 2012. Latitudinal variation in thermal ecology of North American ratsnakes and its implications for the effects of climate warming on snakes. Journal of Thermal Biology 37: 273-281. PDF

Sperry, J.H. and P.J. Weatherhead. 2012. Individual and sex-based differences in behavior and ecology of ratsnakes in winter. Journal of Zoology 287: 142-149. PDF

Sperry, J.H., G. Blouin-Demers, G.L.F. Carfagno, and P.J. Weatherhead. 2010. Latitudinal variation in seasonal activity and mortality in ratsnakes (Elaphe obsoleta). Ecology 91: 1860-1866. PDF

Sperry, J.H. and P.J. Weatherhead.  2010. Ratsnakes and brushpiles: Intended and unintended consequences of improving habitat for wildlife? American Midland Naturalist 163: 311-317. PDF

Weatherhead, P.J., G.L.F. Carfagno, J.H. Sperry, J.D. Brawn, and S.K. Robinson.  2010. Linking snake behavior to nest predation in a Midwestern bird community.  Ecological Applications 20: 234-241. PDF

Sperry, J.H., L.K. Butler, L.M. Romero, and P.J. Weatherhead. 2009. Effects of parasitic infection and radio-transmitters on condition, hematological characteristics and corticosterone concentrations in Texas ratsnakes. Journal of Zoology 278: 100-107. PDF

Sperry, J.H. and P.J. Weatherhead. 2009. Sex differences in behavior associated with sex-biased mortality in an oviparous snake species.  Oikos 118: 627-633. PDF

Sperry, J.H., D.A. Cimprich, R.G. Peak, and P.J. Weatherhead. 2009. Is nest predation on two endangered bird species higher in habitats preferred by snakes?  Ecoscience 16: 111-118. PDF

Sperry, J.H. and P.J. Weatherhead. 2009. Does prey availability determine seasonal patterns of habitat selection in Texas ratsnakes?  Journal of Herpetology 43: 55-64. PDF

Sperry, J.H., R.G. Peak, D.A. Cimprich, and P.J. Weatherhead.  2008.  Snake activity affects seasonal variation in nest predation risk for birds.  Journal of Avian Biology 39: 379-383. PDF

Sperry, J.H. and P.J. Weatherhead.  2008. Prey-mediated effects of drought on condition and survival of a terrestrial snake.  Ecology 89: 2770-2776. PDF

Sperry, J.H. and C.A. Taylor.  2008. Habitat use and seasonal activity patterns of the Great Plains ratsnake in central Texas. Southwestern Naturalist 53: 444-449. PDF

Sperry, J.H., T.L. George, and S. Zack.  2008.  Ecological factors affecting response of Dark-eyed Juncos to prescribed burning.  Wilson Journal of Ornithology 120:131-138. PDF


Contact us

If you are interested in joining the Sperry lab
as an undergraduate or graduate student
please email
Jinelle Sperry at:

We are located in S-506 Turner Hall on the University of Illinois Urbana-Champaign campus.