Analysis of variance of counts of calls of male ringnecked pheasants (Phasianus colchicus) in Iowa revealed highly significant differences among 16 persons on the same 10-station route on the same morning. Differences up to 15 minutes in starting time of observers had no significant effect on counts.
Proceedings of the Iowa Academy of Science
©1968 Iowa Academy of Science, Inc.
Vohs, Paul A. Jr. and Hein, Dale
"Variation Among Participants in the Count of Calls of Cock Pheasants,"
Proceedings of the Iowa Academy of Science, 75(1), 115-119.
Available at: https://scholarworks.uni.edu/pias/vol75/iss1/19