Student Publications

 Manuscripts submitted or in preparation

  • Hayward, J. L., Henson, S. M. Tkachuck, R., Tkachuck, C., Payne, B. G., Johnson, C. K. (In preparation). Predicting numbers of loafing gulls close to Pacific and Atlantic breeding colonies.
  • Henson, S. M., Hayward, J. L., Dennis, B., Galusha, J. G., Cushing, J. M., Foster, L., & Dass, S.  (In preparation). Compartmental models of animal behavior.
  • McWilliams, K. M., Hayward, J. L., Atkins, G. J., & Henson, S. M. (In preparation). Courtship and copulation in Glaucous-winged Gulls, Larus glaucescens.
  • Henson, S. M., Hayward, J. L., Cushing, J. M., Atkins, G. J., Sandler, A. G., & Saint Martin, W. (In preparation). Changing sea surface temperature alters timescale of reproductive synchrony in seabirds.
  • Atkins, G. J., Reichert, A. A., Henson, S. M., & Hayward, J. L. (In preparation). Copulation song synchronizes head-tossing and mounting behaviors in Glaucous-winged Gulls.
  • Sandler, A. G., Megna, L. C., Hayward, J. L., Henson, S. M., & Tkachuck, R. D. (Submitted). Every-other-day clutch-initiation synchrony in ring-billed gulls (Larus delawarensis).


Refereed papers

  1. Atkins, G. J., Sandler, A. G., McLarty, M., Henson, S. M., & Hayward, J. L., 2015. Oviposition behavior in Glaucous-winged Gulls (Larus Glaucenscens). Wilson Journal of Ornithology, 127:486-493.
  2. Payne, B. G., Henson, S. M., Hayward, J. L., Megna, L. C., & Velastegui Chavez, S. R., 2015.Environmental constraints on gaul-out and foraging dynamics in Galapagos marine iguanas. Journal of Coupled Systems and Multiscale Dynamics. 3:208-218.
  3. Navia, B., Burden, C. Steely, T., Hasegawa, H., Cha, E., Henson, Sm. M., Stout, J., & Atkins, G. J., 2015. Parallel effects of temperature on the male cricket calling song, phonotaxis of the female and the auditory responses of the L3 neurone. Physiological Entomology 40:113–122.
  4. Hayward, J. L., Atkins, G. J., Reichert, A. A., & Henson, S. M., 2015. Common Ravens (Corvus corax)pPrey on rhinoceros auklet (Cerorhinca monocerata) eggs, chicks, and possibly adults. Wilson Journal of Ornithology 127:336-339.
  5. Kang, J.H., & Tritch, W. 2015. Conditions for Existence or Nonexistence of Positive Solutions to Elliptic General Model.  British Journal of Mathematics & Computer Science, 8.6: 447-457.
  6. Seo, Y. L, & Oh, Y. M., 2015.  A curve satisfying T/K = S with constant K = 0.  American Journal of Undergraduate Research 12(2): 57-62. 
  7. Megna, L. C., Moncrieff, A. E., Hayward, J. L, & Henson, S. M., 2014. Equal reproductive success of phenotypes in the Larus glaucescens-occidentalis complex. Journal of Avian Biology 45:001-007. DOI: 10.1111/jav.00421
  8. Burton, D., & Henson, S. M., 2014. A note on the onset of synchrony in avian ovulation cycles. Journal of Difference Equations and Applications. DOI: 10.1080/10236198.2013.870564.
  9. Hayward, J. L., Weldon, L. M., Henson, S. M., Megna, L. C., Payne, B. G., Moncrieff, A. E., 2014. Egg cannibalism in seabird colony increases with sea surface temperature. Condor 116:62-73.
  10. Hayward, J. L., Megna, L. C., Payne, B. G., Velastegui Chavez, S. R., & Henson, S. M., 2013. Temporal and environmental effects on the behavior of flightless cormorants. Wilson Journal of Ornithology 125:790–799.
  11. Cowles, J. D., Henson, S. M., Hayward, J. L., & Chacko, M. W., 2013. A mathematical method for predicting harbor seal (Phoca vitulina) haulout and monitoring long-term population trends without telemetry. Natural Resource Modeling 26:605-627.
  12. McCormick, M. A., Hayward, J. L., and S. M. Henson, 2013. Egg mass in Glaucous-winged Gulls (Larus glaucescens) as a function of length and width. Northwestern Naturalist 94:147-150.
  13. Moncrieff, A. E., Megna, L. C., Hayward, J. L., & Henson, S. M., 2013. Mating patterns and breeding success in gulls of the Larus glaucescens-occidentalis complex, Protection Island, Washington, USA. Northwestern Naturalist 94:67-75.
  14. Henson, S. M., Weldon, L. M., Hayward, J. L., Greene, D. J., Megna, L. C., & Serem, M. C., 2011. Coping behavior as an adaptation to stress: Post-distrubance preening in colonial seabirds. Journal of Biological Dynamics, DOI 10.1080/17513758.2011.605913.
  15. Ibanez, B., Kang, J.H., & Lee, J.H., 2009. Non-negative steady state solutions to an elliptic biological model. International Journal of Pure and Applied Mathematics,.53.3:385-394.
  16. Hayward, J. L., Henson, S. M., Banks, J. C.,Lyn, S. L., 2008. Mathematical modeling of appendicular bone growth in glaucous-winged gullsJournal of Morphology.
  17. Moore, A. L., Damania, S. P., Henson, S. M., & Hayward, J. L., 2008. Modeling the daily activities of breeding colonial seabirds: dynamic occupancy patterns in multiple habitat patches. Mathematical Biosciences and Engineering 5:831-842.
  18. Cushing, J. M., Henson, S. M., & Blackburn, C. C , 2007. Multiple mixed-type attractors in a competition model. Journal of Biological Dynamics 1:347-362.
  19. Lizarraga, K.M., Kang, J.H., &  Lee, J.H., 2006. Perturbation of a nonlinear elliptic biological interacting model. Dynamics of Partial Differential Equations. 3(4).
  20. Henson, S. M., Hayward, J. L., & Damania, S. P., 2006  Identifying environmental determinants of diurnal distribution in marine birds and mammals. Bulletin of Mathematical Biology 68:467-482.
  21. Damania, S. P., Phillips, K. W., Henson, S. M., &  Hayward, J. L., 2005. Habitat patch occupancy dynamics in Glaucous-winged Gulls (Larus glaucescens) II: A continuous-time model. Natural Resource Modeling 18:469-499.
  22. Phillips, K. W., Damania, S. P., Hayward, J. L., Henson, S. M., &   Logan, C. J., 2005. Habitat patch occupancy dynamics in Glaucous-winged Gulls (Larus glaucescens) I: A discrete-time model. Natural Resource Modeling 18:441-468.
  23. Hayward, J. L., Henson, S. M., Logan, C. J., Parris, C. R., Meyer, M. W., &  Dennis, B., 2005. Predicting numbers of hauled-out harbour seals: a mathematical model. Journal of Applied Ecology 42:108-117.
  24. Henson, S. M., Hayward, J. L. Burden, C. M., Logan, C. J., & Galusha, J. G., 2004. Predicting dynamics of aggregate loafing behavior in gulls at a Washington colony. Auk 121:380-390.
  25. Henson, S. M, Reilly, J. R., Robertson, S. L., Schu, M. C., Rozier, E. W. D., & J. M. Cushing, 2003. Predicting irregularities in population cycles. SIAM Journal on Applied Dynamical Systems 2:238.