ML179587271
- 年齡
- 未確定
- 性別
- 未確定
- 行為
- 飛行中
- 標籤
- 棲地; 沒有鳥
影音備註
Entering chimney at 19:26 EDT
觀察細節
Conservative estimate, based on counting 100x100 of swirling flock. The swifts entered the chimney at 215 South McDowell (News & Observer) from 7:14 until 7:30. About 10 per second entered the chimney over a period of 15 minutes. There were breaks in between where they were swirling, so another estimate was based on 500 birds entering the chimney per minute for a total of 7 active minutes. They started the entry at 7:14 and the last bird entered at 7:30.See photos.
技術資訊
- 型號
- COOLPIX S7000
- ISO
- 800
- 焦距
- 44.6 mm
- 閃光
- Flash did not fire, auto
- 光圈值
- f/5.7
- 快門
- 1/6 sec
- 次方
- 2048 pixels x 1536 pixels
- 原始檔案大小
- 620.58 KB