Weather Factors Influencing Winter Roosts of American Crows in Central Iowa

Thumbnail Image
Date
2008-01-01
Authors
Obrecht, Joshua
Dinsmore, Stephen
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Person
Dinsmore, Stephen
Department Chair
Research Projects
Organizational Units
Organizational Unit
Natural Resource Ecology and Management
The Department of Natural Resource Ecology and Management is dedicated to the understanding, effective management, and sustainable use of our renewable natural resources through the land-grant missions of teaching, research, and extension.
Journal Issue
Is Version Of
Versions
Series
Department
Natural Resource Ecology and Management
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

Description
Keywords
Citation
DOI
Source
Copyright
Tue Jan 01 00:00:00 UTC 2008
Collections