Papers cover topics in Biology (B) and/or History (H).

  • Halley, M. R., Weckstein, J. D., Catanach, T. A., and J. Klicka. In review. Implications of climate-mediated dispersal on species limits in the Slaty-backed Nightingale-Thrush complex (Aves: Turdidae: Catharus fuscater), with descriptions of two new species. The Auk: Ornithological Advances [Submitted on 12 June 2018]. BH
  • Halley, M. R. In review. Rediscovery of the holotype of an extinct cephalopod, Baculites ovatus Say, after nearly two centuries. Proceedings of the Academy of Natural Sciences [Submitted on 12 June 2018]. BH
  • Halley, M. R. In review. Jefferson’s ornithology reconsidered. Proceedings of the American Philosophical Society [Submitted on 13 November 2017]. BH
  • Halley, M. R. 2018. The ambiguous identity of Turdus mustelinus Wilson, and a neotype designation for the Veery Catharus fuscescens (Stephens). Bulletin of the British Ornithologists’ Club 138(2): 78–91. DOWNLOAD PDF  BH
  • Halley, M. R. 2018. Audubon’s famous banding experiment: Fact or fiction? Archives of Natural History 45(1): 118–121. LINK  BH
  • Halley, M. R. [editor]. 2018. Cassinia volume 76. Delaware Valley Ornithological Club, 116 pp. LINK  BH
  • Halley, M. R. 2018. Lost tales of American ornithology: Reuben Haines and the Canada Geese of Wyck (1818–1828). Cassinia 76: 52–63. DOWNLOAD PDF  H
  • Halley, M. R., and A. W. Croasdale. 2018. The Philadelphia Breeding Bird Census of 2016. Cassinia 76: 5–26. DOWNLOAD PDF  B
  • Halley, M. R. 2017. Origin of the phrase “Indian Summer.” Notes & Queries 64(3): 503–505.  H
  • Halley, M. R., Klicka, J., Sesink Clee, P., and J. D. Weckstein. 2017. Restoring the species status of Catharus maculatus (Aves: Turdidae), a secretive Andean thrush, with a critique of the yardstick approach to species delimitation. Zootaxa 4276(3): 387–404. DOWNLOAD PDF BH
  • Halley, M. R. 2016. Neglected type specimens of Western Meadowlark Sturnella neglecta from Audubon’s last expedition. Bulletin of the British Ornithologists’ Club 136(4): 287–290. DOWNLOAD PDF  BH
  • Halley, M. R., Heckscher, C. M., and V. Kalavacharla. 2016. Multi-generational kinship, multiple mating, and flexible modes of parental care in a breeding population of the Veery (Catharus fuscescens), a trans-hemispheric migratory songbird. PLoS ONE 11(6): e0157051. doi:10.1371/journal.pone.0157051  B
  • Halley, M. R. 2015. The Heart of Audubon: Five unpublished letters (1825–1830) reveal the ornithologist’s dream and how he (almost) achieved it. 16(1). READ ONLINE  H
  • Halley, M. R., Holmes, A. L., and W. D. Robinson. 2015. Biparental incubation and allofeeding at nests of Sagebrush Brewer’s Sparrows. Journal of Field Ornithology 86(2): 153–162. DOWNLOAD PDF  B
  • Halley, M. R. 2015. Sexual behavior of Tufted Titmice in the Mid-Atlantic Piedmont and southern New Jersey. Cassinia 74-75: 66–70. DOWNLOAD PDF  B
  • Heckscher, C. M., Halley, M. R., and P. Stampul. 2015. Intratropical migration of a Nearctic-Neotropical migratory songbird (Catharus fuscescens) in South America with implications for migration theory. Journal of Tropical Ecology 31: 285–289. DOWNLOAD PDF  B
  • Halley, M. R. 2015. Melvin’s Sandhill Cranes (Grus canadensis): An iconic migratory species returns to the Atlantic Seaboard. The Winnower. READ ONLINE  BH
  • Halley, M. R. 2014. Use of light-level geolocators in the study of avian migration: ethics and opportunities. Science 345(6192): 24–27, online edition. DOI: 10.1126/science.345.6192.24 READ ONLINE  B
  • Halley, M. R. 2014. Slaty-backed Nightingale-Thrush (Catharus fuscater), Neotropical Birds Online (T. S. Schulenberg, Editor). Ithaca: Cornell Lab of Ornithology. READ ONLINE  BH
  • Halley, M. R. 2014. Kin structure and mating system of the Veery (Catharus fuscescens) in the Mid-Atlantic Piedmont. MS Thesis, Delaware State University  READ ONLINE  B
  • Halley, M. R., and C. M. Heckscher. 2013. Interspecific parental care by a Wood Thrush (Hylocichla mustelina) at a nest of the Veery (Catharus fuscescens). Wilson Journal of Ornithology 125(4): 823–828. DOWNLOAD PDF  B
  • Kneidel, A. K., and M. R. Halley. 2013. Notes on berry foraging and vocal behavior of a male Pileated Woodpecker (Dryocopus pileatus). Delmarva Ornithologist 42: 28–31. DOWNLOAD PDF  B
  • Halley, M. R., and C. M. Heckscher. 2012. Multiple male feeders at nests of the Veery. Wilson Journal of Ornithology 124(2): 396–399. DOWNLOAD PDF  B
  • Halley, M. R., and A. Goel. 2012. A novel color morph and additional population of Raorchestes akroparallagi (Anura: Rhacophoridae) and a second R. chromasynchysi population in Karnataka, India. Herpetological Review 43(2): 233–235.  DOWNLOAD PDF  B
  • Halley, M. R. 2012. Direct evidence of Kentucky Warbler (Geothlypis formosus) breeding success from a disturbed Mid-Atlantic Piedmont forest in Delaware. Delmarva Ornithologist 41: 7–9.  DOWNLOAD PDF  B

Non-Author Contributions—I have contributed in various ways to many studies that were spearheaded by friends and colleagues. Here is a partial list, with the extent of my involvement in brackets:

  • Heckscher, Christopher M., Louis R. Bevier, Alan F. Poole, William Moskoff, Peter Pyle and Michael A. Patten.(2017).Veery (Catharus fuscescens), The Birds of North America (P. G. Rodewald, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America: [I contributed photographs of C. f. fuscescens, C. f. salicicola, and C. f. fuliginosus for the Systematics page.]
    DOI: 10.2173/bna.veery.03
  • Heckscher, C. M., Gutierrez Ramirez, M., and A. Kneidel. 2017. Reproductive outcomes determine the timing of arrival and settlement of a single-brooded Nearctic–Neotropical migrant songbird (Catharus fuscescens) in South America. Auk: Ornithological Advances 134: 842–856. [I collected breeding and geolocator data for this study, while working on my mating system research at Heckscher’s field site in 2011–2012.]
  • Rosen, D. S., Erickson, B., Kim, Y. E., Mirman, D., Hamilton, R. H., and J. Kounios. 2016. Anodal tDCS to Right Dorsolateral Prefrontal Cortex Facilitates Performance for Novice Jazz Improvisers but Hinders Experts. Frontiers in Human Neuroscience 10: 579. doi: 10.3389/fnhum.2016.00579. [I played piano while receiving transcranial direct current stimulation (tDCS) for Rosen et al.’s study.]
  • FitzGerald, A. M., D. M. Whitaker, J. Ralston, J. J. Kirchman, and I. G. Warkentin. 2017. Taxonomy and distribution of the imperilled Newfoundland Gray-cheeked Thrush, Catharus minimus minimus. Avian Conservation and Ecology 12(1): 10. [I was a member of the expedition to Newfoundland and Labrador in 2015, to collect vegetation surveys and blood samples of C. minimus with two of the authors.]
  • Bayly, N. J., Cárdenas Ortiz, L., Rubio, M., and C. Gómez. 2014. Migration of raptors, swallows, and other diurnal migratory birds through the Darien of Colombia. Ornitologia Neotropical 25: 63–71. [I assisted at the banding station, and counted flocks of migrants in October 2012, at Bayly et al.’s field site in Sapzurro, Colombia.]
  • Heckscher, C. M. 2013. Photuris mysticalampas (Coleoptera: Lampyridae): A new firefly from peatland floodplain forests of the Delmarva Peninsula. Entomological News 123(2): 93–100. (NOTE: I collected two paratypes of this species, which are now in the Heckscher collection at the Smithsonian NMNH. See photo. )
  • Berg, K. S., Beissinger, S. R. and Bradbury, J. W. 2013. Factors shaping the ontogeny of vocal signals in a wild parrot. Journal of Experimental Biology 216: 338–345.
  • Holmes, A. L. and W. D. Robinson. 2013. Fire mediated patterns of population densities in Mountain Big Sagebrush bird communities. Journal of Wildlife Management 77(4): 737–748. [I was hired by Holmes to collect data for this study during 3 consecutive breeding seasons, 2006-08, over 10 cumulative months in the sagebrush.]
  • Berg, K. S., Delgado, S., Kortopassi, K. A., Beissinger, S. R., and J. W. Bradbury. 2012. Vertical transmission of learned signatures in a wild parrot. Proceedings of the Royal Society B 279: 585–591. [I collected data for this project while working as Berg’s field assistant at Hato Masaguaral, Veneuzela, September–November, 2007.]
  • Concannon, M. R., Stein, A. C., and J. A. C. Uy. 2012. Kin selection may contribute to lek evolution and trait introgression across an avian hybrid zone. Molecular Ecology 21: 1477–1486.
  • Berg, K. S., Delgado, S., Okawa, R., Beissinger, S. R., and J. W. Bradbury. 2011. Contact calls are used for individual mate recognition in free-ranging green-rumped parrotlets, Forpus passerinus. Animal Behaviour 81: 241–248. [I collected data for this project while working as Berg’s field assistant at Hato Masaguaral, Veneuzela, September–November, 2007.]
  • Holmes, A. L. 2010. Small mammal and bird abundance in relation to post-fire habitat succession in mountain big sagebrush (Artemesia tridentata ssp. vaseyana) communities. Ph.D. Dissertation, Oregon State University.
  • Stein, A. C. 2009. Plumage evolution in bearded manakins (Manacus spps.). Ph.D. Dissertation, Syracuse University. [I was hired as Stein’s assistant, and lived with him from February 22–June 8, 2005, at the Guaymi village of Changuinola Arriba, on the upper Rio Changuinola.]
  • Uy, J. A. C., and A. C. Stein. 2007. Variable visual habitats may influence the spread of colorful plumage across an avian hybrid zone. Journal of Evolutionary Biology 20: 1847–1858.
  • Stein, A. C., and J. A. C. Uy. 2006. Unidirectional introgression of a sexually selected trait across an avian hybrid zone: a role for female choice? Evolution 60: 1476–1485.


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