Nest site characteristics and nesting success of the Western Burrowing Owl in the eastern Mojave Desert
Journal of Arid Environments
By: Kathleen M. Longshore and Dorothy E. Crowe
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Abstract
We evaluated nest site selection at two spatial scales (microsite, territory) and reproductive success of Western Burrowing Owls (Athene cunicularia hypugaea) at three spatial scales (microsite, territory, landscape) in the eastern Mojave Desert. We used binary logistic regression within an information-theoretic approach to assess factors influencing nest site choice and nesting success. Microsite-scale variables favored by owls included burrows excavated by desert tortoise (Gopherus agassizii), burrows with a large mound of excavated soil at the entrance, and a greater number of satellite burrows within 5 m of the nest burrow. At the territory scale, owls preferred patches with greater cover of creosote bush (Larrea tridentata) within 50 m of the nest burrow. An interaction between the presence or absence of a calcic soil horizon layer over the top of the burrow (microsite) and the number of burrows within 50 m (territory) influenced nest site choice. Nesting success was influenced by a greater number of burrows within 5 m of the nest burrow. Total cool season precipitation was a predictor of nesting success at the landscape scale. Conservation strategies can rely on management of habitat for favored and productive nesting sites for this declining species.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Nest site characteristics and nesting success of the Western Burrowing Owl in the eastern Mojave Desert |
| Series title | Journal of Arid Environments |
| DOI | 10.1016/j.jaridenv.2013.03.004 |
| Volume | 94 |
| Year Published | 2013 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Western Ecological Research Center |
| Description | 8 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Arid Environments |
| First page | 113 |
| Last page | 120 |
| Country | United States |
| State | Arizona;Nevada |
| Other Geospatial | Colorado River;Lake Mead National Recreation Area;Mojave Desert |
| Google Analytic Metrics | Metrics page |