Aaron Haiman

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Avian Sciences Graduate Group Alumni


Major Professor: Thomas Coombs-Hahn
Home Department: Neurobiology, Physiology, and Behavior - Division of Biological Sciences


  • M.S. Avian Sciences UC Davis - 2011
  • B.S. Environmental Sciences UC Berkeley, 2006.

Thesis Title
Levels of Variation in Evening Grosbeak (Coccothraustesvespertinus) Calls and Morphology

Current position

Ph.D. student in Animal Behavior Graduate Group, University of California, Davis

Research interests
The study of bird ecology, evolution and conservation are my major areas of interest. The first step towards conserving biodiversity is to determine how many distinct species and subspecies exist. To this end I am examining the vocal, physical, and genetic differences that exist between different geographic populations of Evening Grosbeaks, and whether they represent separate subspecies. Determining if any of these differences act as barriers to mixing between these populations, and also whether any of these differences represent adaptations to specific resources will be the next areas I hope to study. For example, if different calls exist, do individuals only respond their own call? If different bill shapes exist, is this an indication that different populations eat different seeds and so use different types of habitat? These questions, and others like them, are crucial to understanding and preserving the natural world around us, and I hope to pursue their answers in my career as an avian biologist.


Haiman, A.N.K., Newell, F.L.,  Narango, D.L., Elder, J.M., Leonhard, L.D., Philhower-Gillen, J., Johnson, A.M., and Rodewald, A.D. 2013. Occurrence of polygyny and double brooding in the eastern wood-pewee. Wilson Journal of Ornithology 125: 251-259.

Haiman, A.N.K. 2012. The evening grosbeak: evolution in action. Birding Magazine 44: 34-40.

Haiman, A.N.K., Gendi, K.M., and Hahn, T.P. 2012. Variation in the flight calls and responsiveness among individuals and types in the Evening Grosbeak (Coccothraustes vespertinus). (Poster and Abstract) Society for Integrative and Comparative Biology annual meeting, Charleston, SC.

Haiman, A.N., Hahn, T.P., Brazeal, K.R., De Castro, D.M., Gendi, K.M., Bomze, L.M., and Watts, H.E. 2012. Evolution of photorefractoriness in the Cardueline finches. (Poster and Abstract) Society for Integrative and Comparative Biology annual meeting, Charleston, SC.

Haiman, A.N.K. 2007. Skaggs Island and surroundings. Pacific Raptor Report 28:28-29. Pericoli, R.V., and A.M. Fish, and A.N.K.

Haiman. 2006. Urban-nesting Cooper's Hawks monitored bycitizens in Berkeley, California. Poster at the Society for Conservation Biology annual meeting. San Jose, California.

Haiman, A.N.K. 2002. A Gyrfalcon in Oregon. Pacific Raptor Report 23:18-19.