Research on coyote vocalizations have included McCarley's (1975) description of long-distance vocalizations and Lehnar's (1976) descriptive lexicon of vocalizations including a discussion of their behavioral context. The research reported on here is one phase of continuing research to determine the function of the lone howl, group howl and group yip-howl vocalizations.
Lehner, Philip N.
"Analysis of Coyote Vocalizations,"
Jackson Hole Research Station Annual Report: Vol. 1976
, Article 7.
Available at: http://repository.uwyo.edu/jhrs_reports/vol1976/iss1/7