Nebraska Academy of Sciences

 

Date of this Version

1977

Document Type

Article

Citation

Published in Transactions of the Nebraska Academy of Science, Volume 4 (1977).

Comments

Copyright 1977 by the Authors; used by permission of the NAS

Abstract

The role, intensity, and frequency of Lesser Sandhill Crane (Grus canadensis) dances were interpreted from observations of 1,167 dance sequences from March 6, 1975, to April 15,1975. The observations were from 27 sites in Kearney and Hall Counties, Nebraska.

Nineteen variables, selected as possible determinants of dance frequency (dances/minute), were recorded on field observation forms along with a description of each dance and the approximate duration.

The 19 variables were regressed against the dance frequency of the total dances as well as 6 subgroups-courtship display, emotion or tension-release, aggression-related activity, pre-flight and pre-walk communication, and response to possible danger. Primary factors selected as influencing the dance frequencies of all the dances collectively included: relative density, distance to the nearest road, date, time, flock size, circular flock shape, and grazing in corn stubble. Primary predictors were also selected for each of the 6 dance types.

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