在线查找
与期刊/刊物的链接
在图书馆查找
正在查找有这资料的图书馆...
详细书目
| 文件类型: | 文章 |
|---|---|
| 所有的著者/提供者: | Bertram G Murray (Jr.) |
| ISSN: | 0004-8038 |
| OCLC号码: | 484367104 |
| 语言注释: | English |
| 注意: | Fig. 1. The hypothetical postbreeding migration route of the Blackpoll Warbler through the southeastern United States. Hatched area shows breeding range in North America and wintering range in South America. Stippling shows actual and hypothetical distribution during migration. Short arrows over the sea show wind drift to Bermuda. B = Bermuda, A = Antigua. Fig. 2. The hypothetical postbreeding migration route of the Blackpoll Warbler over the western Atlantic Ocean. Symbols as in Fig. 1. Long arrows over land indicate the hypothetical direction of flight. |
| 奖励: |
摘要:
Blackpoll Warblers (Dendroica striata) may reach their winter range in South America by migrating directly over the Atlantic Ocean from the northeastern United States (Drury and Keith 1962, Nisbet et al. 1963) and the Maritime Provinces (Richardson 1972, 1980), through the southeastern United States (Cooke 1904, 1915; Murray 1965, 1966a), or through both regions. Evidence obtained since the 1960s has been accepted as supporting the first of these hypotheses. My purpose was to provide a critical review of the evidence for and against these conflicting views. I examined the geographic distribution and the time of occurrence of Blackpoll Warblers during migration from the northern United States to the Caribbean islands, differences in mean body mass of samples in time and place from the northeastern United States, Bermuda, and Florida, and radar and visual evidence from over the sea. There is no unequivocal evidence that any Blackpoll Warblers migrate over the sea directly from New England to South America, and all evidence is consistent with the hypothesis that Blackpoll Warblers migrate to South America through the southeastern United States.
