Pinyon Jay Gymnorhinus cyanocephalus

Kristine Johnson and Russell P. Balda
Version: 2.0 — Published March 19, 2020

About the Author(s)

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About the Author(s)

Kristine Johnson is Research Associate Professor of Biology and Zoology Coordinator at Natural Heritage New Mexico at the University of New Mexico in Albuquerque. She has been conducting research on animals of conservation concern there, primarily birds, since 1996. She received a B.A. from the University of Kansas, an M.S. from Trinity University, and a Ph.D. from the University of New Mexico. She conducted postdoctoral research at the University of New Mexico in collaboration with J. David Ligon and Randy Thornhill and at the University of Illinois in collaboration with Nancy Burley. Her dissertation was on the mechanisms of sexual selection in Pinyon Jays. Having become concerned about Pinyon Jay population declines, she returned to the study of Pinyon Jays in 2004 and has studied their habitat use and conservation biology for the past 15 years. She is currently semi-retired, researching Pinyon Jays exclusively. E-mail: kjohnson@unm.edu.

Russell P. Balda, Regents' Professor of Biology at Northern Arizona University, has been teaching and conducting research there since 1966. Raised in Oshkosh Wisconsin, he lived on the edge of town where he noted the differences in bird life between rural and urban settings. He was greatly influenced by his advisor, Dr. Jacob Shapiro at the University of Wisconsin, Oshkosh, where he received his B.S. degree. He earned his M.S. and Ph.D. under Dr. S. Charles Kendeigh at the University of Illinois. For his doctoral dissertation, he worked on the breeding birds of the Chiricahua Mountains. He began studying Pinyon Jays and Clark's Nutcrackers in the late 1960s, and the studies continue at present, especially on their spatial and social mental capabilities. He has also worked on the value of dead trees to bird populations, breeding birds of the ponderosa pine forest, Spotted Owls, cavity-nesting birds, a terrestrial theory for the origin of bird flight, and avian cognition. In 1998, Balda received the Miller Award from the Cooper Ornithological Society. He is also a Honorary Member of this society, a Corresponding Fellow of the German Ornithologists' Union, a Fellow of the American Association for the Advancement of Science, the Arizona-Nevada Academy of Sciences, the Animal Behavior Society and the American Ornithologists' Union. E-mail: russell.balda@nau.edu.

Recommended Citation

Johnson, K. and R. P. Balda (2020). Pinyon Jay (Gymnorhinus cyanocephalus), version 2.0. In Birds of the World (P. G. Rodewald and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pinjay.02