Grand Teton National Park Report
Obtaining additional information on populations, movements, activity patterns and habitat preferences are the main goals of this study. Special efforts were made to try to round out an understanding of the nocturnal phase of an otter's 24-hour activity cycle.
Hall, Joseph G.
"Ecology of River Otters in Grand Teton National Park,"
University of Wyoming National Park Service Research Center Annual Report: Vol. 10
, Article 13.
Available at: http://repository.uwyo.edu/uwnpsrc_reports/vol10/iss1/13