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日期
地点
- 年龄
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- 性别
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观察细节
Quite the surprise! Although fairly common in the area, I have never before seen or heard this species at this precise location, despite many hours of birding there. What was presumably a pair were sticking together constantly, with the male occasionally singing, and there was also some alarm calling (alarm calls of this vireo sound different from those of most other vireos, slightly higher-pitched and slightly less harsh). They were in the company of other vireos and moved with the flock. The other vireos did not sing (although it's not uncommon to hear migratory vireo species sing in migration, even down here in Central America). Since they were with migrant vireos, and at a location where they normally don't occur, I considered the possibility—unlikely, but you never know—of Cassin's Vireo. However, CAVI shows a stronger hood, more markings on the flanks, and sings a different song. The secondary edging on these birds was greenish, a mark not shown in northern populations of Plumbeous Vireos but present in the resident (Central American) Plumbeous Vireo. They were also quite small. So... if it looks like a Central American Plumbeous Vireo, sounds like a Central American Plumbeous Vireo, behaves like a Central American Plumbeous Vireo... it's probably a Central American Plumbeous Vireo!
技术信息
- 型号
- Canon PowerShot SX60 HS
- ISO
- 200
- 焦距
- 247 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/6.5
- 快门速度
- 1/160 sec
- 尺寸
- 2899 pixels x 2174 pixels
- 原始文件大小
- 2.31 MB