ML20527701
- 年龄
- 未说明
- 性别
- 未说明
- 标签
- 鸟群
媒体文件注释
I considered this grouplet to be about 5% of the total flock. If so, then there were ca. 340 grackles in total. I lowballed that extrapolation by a factor of 2.
观察细节
Stearns Lake is the site of an annual (wintertime) roost of Great-tailed Grackles, and counts like this aren't uncommon here from mid-autumn through early spring. This count is a lowball estimate; see photo.
技术信息
- 型号
- Canon PowerShot SX50 HS
- ISO
- 80
- 焦距
- 128.8 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/5.6
- 快门速度
- 1/250 sec
- 尺寸
- 4000 pixels x 3000 pixels
- 原始文件大小
- 2.03 MB