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详细书目
| 文件类型: | 文章 |
|---|---|
| 所有的著者/提供者: | Kenneth L Petersen; Louis B Best |
| ISSN: | 0010-5422 |
| OCLC号码: | 478436347 |
| 语言注释: | English |
| 注意: | FIGURE 5. Orientation of Sage Sparrow nests relative to the center of the support shrubs. Values represent numbers of nests. |
| 奖励: |
摘要:
In 1980, 1981, and 1982, we studied nest-site selection by Sage Sparrows (Amphispiza belli) in a sagebrush community in Idaho to provide a thorough description of nest-site characteristics and preferences. Sage Sparrows nested in areas where sagebrush coverage was sparse but shrubs were clumped. All nests were situated in big sagebrush (Artemisia tridentata) plants; large, living shrubs were strongly preferred. Nest placement relative to the ground and shrub perimeter seemed quite specific. Sage Sparrows avoided positioning nests on the southwest side of shrubs.
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