Theses & Dissertations

  1. Meaghan Conway, PhD (’19) ~ Niche Evolution along a Gradient of Ecological Specialization
  2. Laura Garey, MS (’17) ~ Community Structure and Food-web Dynamics in Northeastern U.S. Tidal Marshes
  3. Maureen Correll, PhD (’15) ~ Biogeography and Conservation of Tidal Marsh Bird Communities Across a Changing Landscape
  4. Jennifer McCabe, PhD (’15) ~ Explaining Migratory Behaviors Using Optimal Migration Theory
  5. Katharine Ruskin, PhD (’15) ~ Intra- and Interspecific Variation in Demographic Rates and Niche Across the Range of a Species, the Saltmarsh Sparrow (Ammodramus caudacutus)
  6. Evan Adams, PhD (’14) ~ Using Migration Monitoring Data to Assess Bird Population Status and Behavior in a Changing Environment
  7. David Grunzel, MS (’14) ~ Migratory Distance & Predation Risk as Drivers of Behavioral Tradeoff made by Passerines during Fall Stopover
  8. Meghan Powell, MS (’13) ~ The Influence of Anthropomorphic Landscape Changes on the Wetland Birds of Mount Desert Island, Maine.
  9. Allison Byrd, MS (’13) ~ Common Loon (Gavia immer) Biogeography and Reproductive Success in an Era of Climate Change
  10. Ellen Robertson, MS (’12) ~ Responses of Rail Productivity to Water Level Variability and Factors Affecting Rail Broadcast Survey Results
  11. Leah Culp, MS (’12) ~ Roads in Salt Marshes: Flooding, Vegetation, and Sharp-tailed Sparrow Habitat Quality in Tidally Restricted Marshes

Peer-reviewed Publications (members in bold)

  1. Marshall, H, EJ Blomberg, V Watson, M Conway, JB Cohen, MD Correll, CS Elphick, TP Hodgman, AR Kocek, AI Kovach, WG Shriver, WA Wiest, BJ Olsen. In Final Revision. Horizon angle and edge avoidance predict Saltmarsh Sparrow abundance better than habitat area. The Condor: Ornithological Applications.
  2. Adams, EM, KA Williams, BJ Olsen, DC Evers. In Press.  Mercury exposure in migrating songbirds: correlations with physical condition. Ecotoxicology.
  3. McKnight, A, DB Irons, CS Loftin, ST McKinney, BJ Olsen. 2020. Combined influence of intrinsic and environmental factors in shaping productivity in a small pelagic gull, the black-legged kittiwake Rissa tridactyla. Marine Ecology Progress Series 633:207-223. doi: 3354/meps13162. (author reprint)
  4. Conway, M, BJ Olsen. 2019. Contrasting drivers of diversification rates on islands and continents across three Passerine families. Proceedings of the Royal Society B: Biological Sciences. doi:10.1098/rspb.2019.1757. (author reprint)
  5. Olsen, BJ, JL Froehly, AC Borowske, CS Elphick, CR Field, AR Kocek, AI Kovach, RA Longenecker, WG Shriver, J Walsh, KJ Ruskin. 2019. A test of a corollary of Allen’s rule suggests a role for population density. Journal of Avian Biology 5(9): e02116. doi: 10.1111/jav.02116. (author reprint)
  6. Walsh, J, PM Benham, PE Deane-Coe, P Arcese, BG Butcher, YL Chan, ZA Cheviron, CS Elphick, AI Kovach, BJ Olsen, WG Shriver, VL Winder, and IJ Lovette. 2019. Genomics of rapid ecological divergence and parallel adaptation in songbirds. Evolution Letters. doi:10.1002/evl3.126. (author reprint)
  7. Field, CR, KJ Ruskin, JB Cohen, TP Hodgman, AI Kovach, BJ Olsen, WG Shriver, CS Elphick. 2019. Framework for quantifying population responses to disturbance reveals that coastal birds are highly resilient to hurricanes. Ecology Letters. doi: 10.1111/ele.13384. (author reprint)
  8. McCabe, JD, AJ Leppold, RL Holberton, BJ Olsen. 2019. Coastal songbird condition on migratory stopover varies by geographical location and bird age. The Auk: Ornithological Advances. doi: 10.1093/auk/ukz025 (author reprint)
  9. Roberts, SG, RA Longenecker, MA Etterson, CS Elphick, BJ Olsen, WG Shriver. 2019. Preventing local extinctions of tidal marsh endemic Seaside Sparrows and Saltmarsh Sparrows in eastern North America. The Condor: Ornithological Applications 121(1):1-14. doi: 10.1093/condor/duy024. (author reprint)
  10. Wiest, WA, MD Correll, BG Marcot, BJ Olsen, CS Elphick, TP Hodgman, GR Guntenspergen, WG Shriver. 2019. Estimates of tidal-marsh bird densities using Bayesian networks. Journal of Wildlife Management 83(1): 109-120. doi: 10.1002/jwmg.21567. (author reprint)
  11. Correll, MD, W Hantson, TP Hodgman, BB Cline, CS Elphick, WG Shriver, EL Tymkiw, and BJ Olsen. 2018. Fine-scale mapping of coastal plant communities in the Northeastern USA. Wetlands. doi: 1007/s13157-018-1028-3 (author reprint)
  12. Correll, MD, CS Elphick, W Hantson, BB Cline, EL Tymkiw, WG Shriver, BJ Olsen. 2018. A multi-scale comparison of elevation measurement methods in Northeastern USA tidal marshes. doi: 10.1007/s13157-018-1110-x. (author reprint)
  13. Klingbeil, B, JB Cohen, MD Correll, CR Field, TP Hodgman, AI Kovach, BJ Olsen, WG Shriver, WA Wiest, CS Elphick. 2018. Evaluating a focal species approach for tidal marsh bird conservation in the Northeastern United States. The Condor: Ornithological Applications 120(4): 874-885. doi: 10.1650/CONDOR-18-88.1. (author reprint)
  14. Walsh, J, AI Kovach, BJ Olsen, WG Shriver, IJ Lovette. 2018. Bidirectional adaptive introgression between two ecologically divergent sparrow species. Evolution 71(10): 2076-2089. doi: 10.1111/evo.13581 (author reprint)
  15. Longenecker, RA, JL Bowman, BJ Olsen, SG Roberts, CS Elphick, PM Castelli, WG Shriver. 2018. Short-term resilience of New Jersey tidal marshes to Hurricane Sandy. Wetlands. doi:10.1007/s13157-018-1000-2. (author reprint)
  16. Ruskin, KJ, MA Etterson, TP Hodgman, A Borowske, JB Cohen, CS Elphick, CR Field, RA Kern, E King, A Kocek, AI Kovach, K O’Brien, N Pau, WG Shriver, J Walsh, BJ Olsen. 2017. Demographic analysis demonstrates systematic but independent spatial variation in abiotic and biotic stressors across 59 percent of a global species range. The Auk: Ornithological Advances 134(4):903-916. doi: 10.1642/AUK-16-230.1. (author reprint)
  17. McCabe, JD, BJ Olsen, B Osti, PO Koons. 2017. The influence of wind selectivity on migratory behavioral strategies. Behavioral Ecology 29(1):160-168. doi:10.1093/beheco/arx141. (author reprint)
  18. Correll, MD, WA Wiest, TP Hodgman, JT Kelley, BJ McGill, CS Elphick, WG Shriver, M Conway, CR Field, BJ Olsen. 2017. A Pleistocene disturbance event explains modern diversity patterns in tidal marsh birds. Ecography 4(4):684-694. doi: 10.1111/ecog.02937. (author reprint)
  19. Field, CR, KJ Ruskin, B Benvenuti, A Borowske, J Cohen, L Garey, TP Hodgman, RA Longenecker, E King, A Kocek, AI Kovach, K O’Brien, BJ Olsen, N Pau, S Roberts, E Shelly, WG Shriver, J Walsh, C Elphick. 2017. Quantifying the importance of geographic replication and representativeness when estimating demographic rates, using a coastal species as a case study. Ecography 41(6):971-981. doi: 10.1111/ecog.02424. (author reprint)
  20. Roberts, SG, RA Kern, MA Etterson, KJ Ruskin, CS Elphick, BJ Olsen, WG Shriver. 2017. Factors that influence vital rates of Seaside and Saltmarsh sparrows in coastal New Jersey, USA. Journal of Field Ornithology 88(2):115-131. doi: 10.1111/jofo.12199. (author reprint)
  21. Walsh, J, WG Shriver, MD Correll, BJ Olsen, CS Elphick, TP Hodgman, RJ Rowe, KM O’Brien, AI 2017. Temporal shifts in the saltmarsh-Nelson’s sparrow hybrid zone revealed by replicated demographic and genetic surveys. Conservation Genetics. doi:10.1007/s10592-016-0920-8. (author reprint)
  22. Walsh, J, IJ Lovette, VL Winder, CS Elphick, BJ Olsen, WG Shriver, AI Kovach. 2017. Subspecies delineation amid phenotypic, geographic, and genetic discordance in a songbird. Molecular Ecology 26(5):1242-1255. doi: 10.1111/mec.14010. (author reprint)
  23. Ruskin, KJ, MA Etterson, TP Hodgman, A Borowske, JB Cohen, CS Elphick, CR Field, RA Kern, E King, AR Kocek, AI Kovach, KM O’Brien, N Pau, WG Shriver, J Walsh, BJ Olsen. 2017. Seasonal fecundity is not related to geographic position across a species’ global range despite a central peak in abundance. Oecologia 183(1), 291-301. doi: 1007/s00442-016-3745-8. (author reprint)
  24. Pelletreau KN, T Andrews, N Armstrong, MA Bedell, F Dastoor, N Dean, S Erster, C Fata-Hartley, N Guild, H Greig, D Hall, JK Knight, D Koslowsky, PP Lemons, J Martin, J McCourt, J Merrill, R Moscarella, R Nehm, R Northington, BJ Olsen, L Prevost, J Stoltzfus, M Urban-Lurain, MK Smith. A clicker-based case study that untangles student thinking about the processes in the central dogma. CourseSource 3: 10p. (author reprint)
  25. Correll, MD, WA Wiest, BJ Olsen, WG Shriver, CS Elphick, TP Hodgman. 2016. Habitat specialization explains avian persistence in tidal marshes. Ecosphere 7(11):e01506. doi:10.1002/ecs2.1506. (author reprint)
  26. Correll, MD, WA Wiest, TP Hodgman, WG Shriver, CS Elphick, BJ McGill, K O’Brien, BJ Olsen. 2016. Predictors of specialist avifaunal decline in coastal marshes. Conservation Biology. doi:10.1111/cobi.12797. (author reprint)
  27. McCabe, JD, BJ Olsen, D Hiebeler. 2016. Wind patterns as a potential driver in the evolution and maintenance of a North American migratory suture zone. Evolution 70(9): 2145-2154. doi:10.1111/evo.13007. (author reprint)
  28. Walsh, J, BJ Olsen, K Ruskin, WG Shriver, K O’Brien, AI Kovach. 2016. Extrinsic and intrinsic factors influence fitness in an avian hybrid zone. Biological Journal of the Linnean Society. doi:10.1111/bij.12837. (author reprint)
  29. Danner, RM, BJ Olsen, D Luther. 2016. Migratory status, winter subspecies interactions, and habitat segregation of Atlantic Song Sparrows (Melospiza melodia atlantica). The Wilson Journal of Ornithology 128(2):428-431. (author reprint)
  30. Walsh, J, WG Shriver, BJ Olsen, AI Kovach. 2016. Differential introgression and the maintenance of species boundaries in an advanced generation avian hybrid zone. BMC Evolutionary Biology 16:65. doi:10.1186/s12862-016-0635-y. (author reprint)
  31. Wiest, WA, MD Correll, BJ Olsen, CS Elphick, TP Hodgman, DR Curson, and WG Shriver. 2016. Population estimates for tidal marsh birds of high conservation concern in the northeastern USA from a design-based survey. The Condor: Ornithological Applications 118:274-288. doi:10.1650/CONDOR-15-30.1 (author reprint)
  32. Walsh, J, RJ Rowe, BJ Olsen, WG Shriver, AI Kovach. 2016. Genotype-environment associations support a mosaic hybrid zone between two tidal marsh birds. Ecology and Evolution 6(1):279-294. doi:10.1002/ece3.1864. (author reprint)
  33. Greenberg, R, KM Cammen, AG Wilson, BJ Olsen, B Ballentine, N Rotzel McInerney, RC Fleischer. 2016. Geographic population structure and subspecific boundaries in a tidal marsh sparrow. Conservation Genetics. doi: 10.1007/s10592-016-0809-6 (author reprint)
  34. McCabe, JD, BJ Olsen. 2015. Trade-offs between predation risk and fruit resources shape habitat use of landbirds during autumn migration. The Auk: Ornithological Advances 132:903-913. doi: 10.1642/AUK-14-213.1. (author reprint)
  35. Ruskin, KJ, MA Etterson, TP Hodgman, BJ Olsen. 2015. Divergent oviposition preferences of sister species are not driven by nest survival: the evidence for neutrality. Behavioral Ecology and Sociobiology. doi: 10.1007/s00265-015-1975-0. (author reprint)
  36. Walsh, J, WG Shriver, BJ Olsen, KM O’Brien, AI Kovach. 2015. Relationship of phenotypic variation and genetic admixture in the Saltmarsh–Nelson’s sparrow hybrid zone. The Auk: Ornithological Advances 132(3): 704-716. doi: 10.1642/AUK-14-299.1 (author reprint)
  37. Olsen, BJ, JD McCabe, EM Adams, DP Grunzel, AJ Leppold. 2015. Matching ephemeral resources on autumnal stopover and the potential for mismatch. Pp. 163-176 in Phenological Synchrony and Bird Migration: Changing Climate and Seasonal Resources in North America (EM Wood and JL Kellermann, eds.). Studies in Avian Biology (v.47), CRC Press, Boca Raton, FL (author reprint)
  38. Batz, Z, BJ Olsen, J Dumont, F Dastoor, and MK Smith. 2015. (Highlighted as one of the top 8 CBE articles of 2015). Helping struggling students in introductory biology: a peer-tutoring program approach that improves performance, perception, and retention. CBE – Life Sciences Education 14(2):ar16. doi: 10.1187/cbe.14-08-0120 (author reprint)
  39. McCabe, JM, and BJ Olsen. 2015. Landscape-scale habitat availability, and not local geography, predicts migratory landbird stopover across the Gulf of Maine. Journal of Avian Biology 46(4):395-405. doi: 10.1111/jav.00598 (author reprint)
  40. Robertson, EP and BJ Olsen. 2015. (Cover Article) Behavioral plasticity for nest-building increases fecundity in marsh birds. The Auk: Ornithological Advances 132(1): 37-45. doi: 10.1642/AUK-14-73.1. (author reprint)
  41. Robertson, EP and BJ Olsen. 2014. Density, sex, and nest stage affect rail broadcast survey results. Journal of Wildlife Management. doi: 10.1002/jwmg.769 (author reprint)
  42. Olsen, BJ, R Greenberg, JR Walters, RC Fleischer. 2013. (Cover Article) Sexual dimorphism in a feeding apparatus is driven by mate choice and not niche partitioning. Behavioral Ecology 24(6):1327-1338. doi: 10.1093/beheco/art071 (author reprint)
  43. Warner, SE, WG Shriver, BJ Olsen, R Greenberg, and RJ Taylor. 2012. Feathers as indicators of mercury exposure in tidal marsh sparrows: Differences by age, feather type, and species. Archives of Environmental Contamination and Toxicology 63(1). doi: 10.1007/s00244-012-9783-2 (author reprint)
  44. Greenberg, R, R Danner, BJ Olsen, and D Luther. 2012. High summer temperature explains bill size variation in salt marsh sparrows. Ecography 35(2):146-152. doi: 10.1111/j.1600-0587.2011.07002.x (author reprint)
  45. Etterson, MA, BJ Olsen, R Greenberg, and WG Shriver. 2011. Sources, sinks, and model accuracy. Pp. 273-290 in Sources, Sinks, and Sustainability Across Landscapes (J Liu, V Hull, A Morzillo, and J Wiens, eds.). Cambridge University Press, New York. (author reprint)
  46. Etterson, MA, SN Ellis-Felege, D Evers, G Gauthier, JA Grzybowski, BJ Mattsson, LR Nagy, BJ Olsen, CM Pease, M Post van der Burg, and A Potvien. 2011. Modeling fecundity in birds: Conceptual overview, current models, and considerations for future developments. Ecological Modelling 222:2178-2190. doi:10.1016/j.ecolmodel.2010.10.013. (author reprint)
  47. Greenberg, R and BJ Olsen. 2010. Bill size and dimorphism in tidal-marsh sparrows: Island-like processes in a continental habitat. Ecology 91(8):2428-2436. doi: 10.1890/09-1136 (author reprint)
  48. Olsen, BJ, R Greenberg, IA Liu, JM Felch, JR Walters. 2010. Interactions between sexual and natural selection on the evolution of a plumage badge. Evolutionary Ecology 24(4):731-748. doi: 10.1007/s10682-009-9330-4 (author reprint)
  49. Greenberg, R, BJ Olsen, MA Etterson. 2010. Patterns of seasonal abundance and social segregation in inland and Coastal Plain Swamp Sparrow in a Delaware tidal marsh. Condor 112(1):159-167. (author reprint)
  50. Olsen, BJ, R Greenberg, RC Fleischer, and JR Walters. 2008. Extra-pair paternity in the swamp sparrow, Melospiza georgiana: Male access or female preference? Behavioral Ecology & Sociobiology 63(2):285-294. (author reprint)
  51. Olsen, BJ, JM Felch, R Greenberg, and JR Walters. 2008. Causes of reduced clutch size in a tidal marsh endemic. Oecologia 15(3):421-435. (author reprint)
  52. Liu, IA, B Lohr, BJ Olsen, and R Greenberg. 2008. Macrogeographic vocal variation in subspecies of Swamp Sparrow. Condor 110(1):102-109. (author reprint)
  53. Greenberg, R, B Olsen, B Ballentine, S Warner, and R Danner. 2008. Temporal distribution of the Coastal Plain Swamp Sparrow: The importance of subspecies identification. Birding 40:42-49. (author reprint)
  54. Etterson, MA, BJ Olsen, R Greenberg. 2007. The analysis of covariates in multi-fate Markov chain nest failure models. Pp 55-64 in Beyond Mayfield: Measurements of Nest Survival Data (SL Jones and GR Geupel, eds.). Studies in Avian Biology (v.34). (author reprint)
  55. Greenberg, RG, C Elphick, JC Nordby, C Gjerdrum, H Spautz, G Shriver, B Schmeling, BJ Olsen, P Marra, N Nur, and M Winter. 2006. Flooding and predation: Trade-offs in the nesting ecology of tidal-marsh sparrows. Pp. 96-109 in Terrestrial Vertebrates of Tidal Salt Marshes: Ecology, Evolution, and Conservation (R Greenberg, JE Maldonado, S Droege, and MV McDonald, eds.). Studies in Avian Biology (v.32). (author reprint)
  56. Greenberg, R, B Olsen, and G Gough. 2005. Population status of the Coastal Plain Swamp Sparrow in Delaware. Delmarva Ornithologist 37.