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Tillman, Eric

Contact Information

Title: Wildlife Biologist

Address: USDA Wildlife Services, NWRC, Florida Field Station,

2820 East University Avenue, Gainesville, FL 32641

Telephone: 352-375-2229

Fax: 352-378-4925



Research Project:Methods Development and Population Management of Vultures and Invasive Species



M.S., University of Florida, Wildlife Ecology and Conservation
B.S., Florida International University, Environmental Studies


Current Research

  • Diet of monk parakeets in South Florida
  • Development of a selective feeder to dispense contraceptives to monk parakeets
  • Vulture movement patterns and roost management near airports
  • Spatial/temporal measurement and analysis of feral swine damage to environmentally sensitive habitat
  • Habitat use and distribution of feral swine in a local agricultural matrix



Eric A. Tillman is a Wildlife Biologist for the USDA APHIS Wildlife Services, National Wildlife Research Center (NWRC) Florida Field Station in Gainesville, FL. Eric began his career with the NWRC in 1998. Much of his work has been dedicated to the development of methods and tools to manage avian-human conflicts related to agricultural crops, property, and human health and safety. This has included species such as blackbirds, crows, vultures, and monk parakeets. More recently, his focus has expanded to include the ecology and management of invasive reptiles and feral swine.


Avery, M.L., E.A. Tillman, C. Spurfeld, R.M. Engeman, K.P. Maciejewski, J.D. Brown, and E.A. Fetzer. 2014. Invasive black spiny-tailed iguanas (Ctenosaura similis) on Gasparilla Island, Florida, USA. Integrative Zoology 9:590-597.  doi: 10.1111/1749-4877.12085.

Felix, Jr., R.K., S.L. Orzell, E.A. Tillman, R.M. Engeman, and M.L. Avery. 2014. Fine-scale, spatial and temporal assessment methods for feral swine disturbances to sensitive plant communities in south-central Florida. Environmental Science and Pollution Research 21(17):10399-10406. doi: 10.1007/s11356-014-2956-y.

Engeman, R., T. Hershberger, S. Orzell, R. Felix, G. Killian, J. Woolard, J. Cornman, D. Romano, C. Huddleston, P. Zimmerman, C. Barre, E. Tillman, and M. Avery. 2014. Impacts from control operations on a recreationally hunted feral swine population at a large military installation in Florida. Environmental Science and Pollution Research 21(12):7689-7697. doi 10.1007/s11356-014-2727-9.

Avery, M.L., E.A. Tillman, C. Spurfeld, R.M. Engeman, K.P. Maciejewski, J.D. Brown, E.A. Fetzer. In press. Invasive black spiny-tailed iguanas, Ctenosaura similis, on Gasparilla Island, Florida, USA. Integrative Zoology, manuscript online DOI:10.1111/1749-4877.12085.

Thomas, J., R. Engeman, E. Tillman, J. Fisher, and M. Avery. 2012. Optimizing line intercept sampling and estimation for feral swine damage levels in ecologically sensitive wetland plant communities. Environmental Science and Pollution Research, DOI 10.1007/s11356-012-1004-z.

Walter, W.D., J.W. Fischer, J.S. Humphrey, T.S. Daughtery, M.P. Milleson, E.A. Tillman, M.L. Avery. 2012. Using three-dimensional flight patterns at airfields to identify hotspots for avian-aircraft collisions. Applied Geography 35: 53-59.

Avery, M.L., E.A. Tillman, K.L. Keacher, J.E. Arnett, and K.L. Lundy. 2012. Biology of invasive monk parakeets in South Florida. Wilson Journal of Ornithology 124(3): 581-588.

Annala, M., E. A. Tillman, G. Backus, K. L. Keacher, and M. L. Avery. 2012. Crow pellets from winter roosts in Lancaster, Pennsylvania. Northeastern Naturalist 19(3): 527-532.

Avery M.L., J.S. Humphrey, T.S. Daughtery, J.W. Fisher, M.P. Milleson, E.A. Tillman, W.E. Bruce, and W.D. Walter. 2011. Vulture Flight Behavior and Implications for Aircraft Safety. Journal of Wildlife Management 75(7):1581-1587.

Avery, M.L., E.A. Tillman, and K.L. Krysko. 2009. Gopherus polyphemus, Ctenosaura similis, Predation. Herpetological Review 40(4): 435.

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