The second observational research season of the project, a comparative study of interspecies communications in wild, freeranging ungulates was carried out without interruption during the 1964 summer and fall period. In contrast to previous research seasons in the same area we encountered in 1964 rather complex difficulties in the gathering of the observational data. The difficulties were caused mainly by disturbance of the game animals through the extensive tree-spraying program. The general disturbance in the end, however, provided to some extent information on some new aspects of our problem. Project Number 124.
"A Comparative Study of Interspecies Communications,"
Jackson Hole Research Station Annual Report: Vol. 1964
, Article 2.
Available at: http://repository.uwyo.edu/jhrs_reports/vol1964/iss1/2