作者
日期
地点
- 年龄
- 未说明
- 性别
- 未说明
观察细节
Thought at first this was a Vesper Sparrow owing to the noticeable prominent eye ring and the fact it was paler and larger than nearby Savannah Sparrows. I only saw it for about 10 seconds and it flushed behind a bramble hedge, so I had no view of its tail in flight. I could not refind it and I only managed out-of-focus photos. I later concluded that the bird was a Savannah Sparrow, likely one of the larger Alaskan subspecies. The obviously contrasting rufous tertials and greater coverts and prominent pale supercillium with little apparent darker streaking, particularly behind the eye, led me to identify it as a Savannah despite the prominent eye ring. Size and shape of the bill and apparent length of tail also point away from Vesper, not to mention the fact that Vesper would be very rare at this location, particularly in January.
技术信息
- 型号
- Canon EOS REBEL T1i
- ISO
- 400
- 焦距
- 250 mm
- 闪光
- Flash did not fire
- 光圈
- f/5.6
- 快门速度
- 1/250 sec
- 尺寸
- 1237 pixels x 1237 pixels
- 原始文件大小
- 1.04 MB