ML595388731
作者
Ted Floyd 该用户提供的媒体文件 档案
日期
地点
Walden Ponds Wildlife Habitat--Walden & Sawhill Ponds all together
Boulder, Colorado, United States
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媒体文件注释
Two birds in this cut. A close, presumptive "Western" (swainsoni) Warbling Vireo and a farther "Eastern" (nominate gilvus) Warbling Vireo. The presumptive swainsoni has songs ending at the 4.15 sec. and 15.90 sec. marks. The "Eastern" (nominate gilvus) has songs ending at the 6.80-sec. and 13.90-sec. marks.
观察细节
For the past 10+ years, the Warbling Vireos here have been nominate "Eastern" gilvus. And we heard two such birds today. However, we also heard (and recorded) one that sounded better for "Western" swainsoni. (Audio below, with discussion.) Also, one of the seen-only birds looked better for "Western," although I realize that it is an impressionistic assessment at best, especially in mid-July.
技术信息
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- 原始文件大小
- 2.79 MB