Dr. Jeffrey A Stratford

Office Information 

Cohen Science Center 210 (Lab: CSC 222)
Office Phone 570-408-4761 
jeffrey dot stratford at wilkes dot edu


Biodiversity of early successional habitats - the GMS projectSeveral colleagues at Wilkes combining efforts to study GMS (grasslands, meadows and shrublands). All of these habitats have been in steep decline in North America and just make a small percent of the habitat in Pennsylvania. Consequently, organisms associated with GMS habitats are also in decline. The goal of our research is to examine the consequences of different management strategies on GMS diversity. 

Ecosystem services along urban-rural gradients. This is a two part study that is examining seed dispersal and insectivory by birds. Both involve the use of models. We are using gelatin/fructose fruits to examine fruit removal rates and clay caterpillars to examine predation rates. Both of these projects would benefit with a large number of collaborators. Interested? Send an email. 
  • The Clay Caterpillar Project examines predation rates on caterpillar models across an urban rural gradient. We expect variation in predation rates because the avian community changes along the urban-rural gradient both in terms of composition and abundance. Urban sites have fewer insectivores but more omnivores and granivores (seed-eaters). How does this affect predation rates? We put out 20 clay caterpillars along edges and count the number of caterpillars that were bitten a week later. With these data we can calculate daily predation rates for caterpillars in different environments. This has implications for controlling invasive insects and the role of birds in that process.  Caterpillars are incredibly important for breeding songbirds and this project is run May to September. 
  • The Frugivory Project examine fruit removal rates across an urban-rural gradient. 

DNA barcoding to explore biodiversty and ecology. This is a post-tenure career exploration. I do not have any experience with the molecular side of ecology so this have been a fun challenge for me and I have been learning tons. We collected hundreds of invertebrates in the course of two years of working on the GMS project and we will use DNA to barcode individuals that belong to taxa that are difficult to identify. Additionally, we are barcoding acorn weevils that infects oaks along the east coast of the US.  

Publications (Google Scholar page
  • Stratford, J.A. and Ç. H. Şekercioğlu, 2015. Birds in Forest Ecosystems. In Peh, Corlett, and Bergeron (Eds.) Handbook of Forest Ecology. Routledge Press. 

  • Stratford, J.A. and P.C. Stouffer. 2013. Microhabitat associations of terrestrial insectivorous birds in Amazonian rainforest and second growth. Journal of Field Ornithology

  • Luo, Y., Z. Yang, M. A. Steele, Z. B. Zhang, J.A. Stratford and H. M. Zhang, 2014. Hoarding without reward: Rodent responses to repeated episodes of complete cache loss. Behavioural Processes 106, 36-43.

  • Curtis, R. A.W. Bartlow, S. Agosta, J. Clemmons, J. A. Stratford. 2013. Clay caterpillar whodunit: a customizable method for studying predator-prey interactions in the field. American Biology Teacher. 
  • Paul, E., J. Alexander, S. Finnegan, A.L. Bond. J.A. Stratford, S. Weidensaul. Call for Retraction, Bird Banding Opinion Piece Raises Objections. Wildlife Professional Spring 2012:68-69.
  • Bartlow, A.W., M. Kachmar, N. Lichti, R.K. Swihart, J.A. Stratford, M.A. Steele. 2011. Does multiple seed loading in Blue Jays result in selective dispersal of smaller acorns? Integrative Zoology 6:235-243.
  • Stratford, J.A. and M. Steele. 2011. Conservation Biology: An Overview In. Terrestrial Vertebrates of Pennsylvania: A Case Study in Conservation.  John Hopkins University Press.
  • Stratford, J.A. 2010. The effect of environmental contaminants on avian populations. In, S.K. Majumdar, T.L. Masters, M. Brittingham, R.M. Ross, R. Mulvihill, and J. Huffman (eds.) Avian Ecology and Conservation: A Pennsylvania Focus with National Implications. Pennsylvania Academy of Sciences. 
  • Stratford, J.A. and W.D. Robinson. 2005. Distribution of Neotropical migratory bird species across an urbanizing landscape. Urban Ecosystems, 8: 59-77. Link.
  • Stratford, J. A. and W. D. Robinson. 2005 Gulliver travels to the fragmented tropics: Geographic variation in mechanisms of avian extinction.  Frontiers in Ecology and the Environment 3: 91-98. Link.
  • Stratford, J.A. 2005. Notes on nests of Ruddy Quail-Doves (Geotrygon montana), Lesser Swallow-tailed Swifts (Panyptila cayennensis), Mouse-colored Antshrikes (Thamnophilus murinus), and Scale-backed Antbirds (Hylophylax poecilonotus) from central Amazonas, Brazil.  Ornithologia Neotropical 15:265-267.
  • Stratford, J. A. 2004. Rise of Islamic creationism [book review]. Cladistics 20: 215-217.
  • Stratford, J. A. and J. W. Tucker. 2002. Sharp-shinned Hawk (Accipiter striatus) nest in the east Gulf Coastal Plain of Alabama. Alabama Birdlife 48:10-12.
  • Stratford, J. A. and P. C. Stouffer. 2001. Reduced feather growth rates of two common birds in a fragmented landscape near Manaus, Brazil. Conservation Biology 15: 721-728. Link.
  • Stratford, J. A. 2000. First report of a Myrmeciza ferruginea nest from Brazil. Ararajuba 8:43-44. 
  • Stratford, J. A. and P. C. Stouffer. 1999. Local extinctions of terrestrial insectivorous birds in a fragmented landscape near Manaus, Brazil. Conservation Biology 13: 1316-1326. Link
  • BIO 225 Population and Evolutionary Biology 
  • BIO 342 Archosaurs
  • BIO 3xx Biostatistics
  • BIO 3xx Conservation Biology 
  • BIO 3xx Ecology