ML69288001
作者
日期
地点
- 年龄
- 未说明
- 性别
- 未说明
观察细节
Minimum count by twos. Significant groups seen in flight numerous times; groups also seen perched along the stream frequently, including at least 10 near the reach 3/4 boundary, and at least 10 (probably more) ca 100-200 m above the diversion much later. Count based on groups seen flying upstream, somewhat high (many times shrub height) between 0814 and 0818. Groups counted of 30; 8; 8; 6; and 20. Groups of up to ca 30 seen in flight several other times during the count, but robins were moving in both directions and I did not attempt another count. Could be a substantial underestimate. Suspect they were feeding on Chokecherry fruits, but I did not confirm this positively. In the area NW of the diversion, I saw several robins on the ground, presumably foraging for something.
技术信息
- 型号
- COOLPIX P900
- ISO
- 100
- 焦距
- 285 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/6.3
- 快门速度
- 1/640 sec
- 尺寸
- 2693 pixels x 3104 pixels
- 原始文件大小
- 757.4 KB