详细书目
| 材料类型: | 硕士论文/博士论文 |
|---|---|
| 文件类型: | 书 |
| 所有的著者/提供者: |
Craig R Kuchel |
| OCLC号码: | 500293511 |
摘要:
The behavior and ecology of harlequin ducks (Histrionicus histrionicus)on McDonald Creek in Glacier National Park, Montana, were studied during the 1973-1976 breeding seasons. Pairs were formed prior to arrival on the breeding grounds in early May. Harlequins confined nearly all activities to swiftly running waters, but also used stretches of abandoned stream-channel. Pairs were not territorial; home ranges were linear and consisted of approximately 1 to 2 km of stream habitat.Considerable overlap of home ranges occurred, especially at favored feeding sites. Density was approximately one pair per favored feeding sites. Density was approximately one pair per 1.1 to 1.5 km of stream.Males comprised 64 percent of the breeding population.
标签
添加标签 目的是为 "Some aspects of the behavior and ecology of Harlequin Ducks breeding in Glacier National Park, Montana.".
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