The influence of winter weather on the survival of Utah's ring-necked pheasants was evaluated using correlation analysis. This method used published Utah State Division of Wildlife Resources population data and a calculated winter warmth index. Results show four different patterns of survival occurring in the 14 counties analyzed.
Wood, Alan K. and Brotherson, Jack D.
"Overwinter survival of ring-necked pheasants in Utah,"
Great Basin Naturalist: Vol. 41
, Article 13.
Available at: http://scholarsarchive.byu.edu/gbn/vol41/iss2/13