Grand Teton National Park Report
1997 was the third and final season devoted to gaining information on the behavior of river otters with most emphasis on nocturnal and diurnal activity. As in the 1995 and 1996 seasons, six automatic camera monitors, activated by treadle switches, were put out at sites often frequented by these animals. In addition, canoes were frequently used for daytime patrols. Field work occurred from July 8 - August 6.
Hall, Joseph G.
"Behavior of River Otters in the Oxbow Bend Vicinity, Grand Teton National Park 1997 Season,"
University of Wyoming National Park Service Research Center Annual Report: Vol. 21
, Article 4.
Available at: https://repository.uwyo.edu/uwnpsrc_reports/vol21/iss1/4