Research Project Report
With the assistance of Betty Erickson, long-term field investigations were continued in the period from May 31 to September 9, 1977. The unusual environmental situation of extreme drought provided some new insights into undiscovered aspects of ungulate behavior
"Investigation of Communication Systems in Free-Ranging Wild Ungulates,"
University of Wyoming National Park Service Research Center Annual Report: Vol. 1
, Article 2.
Available at: http://repository.uwyo.edu/uwnpsrc_reports/vol1/iss1/2