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Article
Weather Factors Influencing Winter Roosts of American Crows in Central Iowa
Journal of the Iowa Academy of Science
  • Joshua D. Obrecht, Iowa State University
  • Stephen J Dinsmore, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2008
Abstract

We investigated the effects of season and weather on the winter roosting behavior of American Crows (Corvus brachyrhynchos) in central Iowa from January through March 2006. The peak number of birds recorded at a roost in Ames, Story County was 9,000+ in early February, and the number of individuals entering the roost decreased through February and March. Crows tended to enter the roost later in the day as winter neared completion. High wind speed and low light intensity caused individuals to enter the roost earlier in the day. Temperature did not affect arrival time of crows. Wind speed, light intensity, and temperature did not significantly affect total number of individuals entering the roost (P . 0.05). However, all three factors were negatively correlated to total number of birds on the roost (20.20, 20.25, and 20.18 respectively). This research improves our understanding of the roost dynamics of an abundant urban wildlife species, which may eventually be used to manage interactions between humans and wildlife in an urban setting.

Comments

This article is from Journal of the Iowa Academy of Science 114 (2008): 35

Copyright Owner
Iowa Academy of Science
Language
en
Date Available
2015-03-11
File Format
application/pdf
Citation Information
Joshua D. Obrecht and Stephen J Dinsmore. "Weather Factors Influencing Winter Roosts of American Crows in Central Iowa" Journal of the Iowa Academy of Science Vol. 114 Iss. 1-2 (2008) p. 35 - 39
Available at: http://works.bepress.com/stephen_dinsmore/63/