ML642767751
- 性別與年齡
- 年齡性別未知 - 1
觀察細節
This was a nearly exact count of swallows on the power lines. I checked a very large number of these swallows when they were on the lines to make sure they all seemed to be VGSW. Attached is one cell-phone photo showing 124 VGSW in one view, when not all the swallows were on the lines.
技術資訊
- 次方
- 3240 pixels x 2160 pixels
- 原始檔案大小
- 1.71 MB