ML610720788
投稿者
日付
場所
- 年齢
- 指定なし
- 性別
- 指定なし
観察結果の詳細
See introduction. Some photos of streaming birds. Between 5:00 and 5:49 I used the stopwatch on my mobile to keep track of passing birds every minute and took multiple readings to check my 1 minute count. The birds were from horizon to horizon (who knows how far beyond my field of vision) and were moving in a ESE direction at the rate of an average of 2,000 per minute. 49 min. x 2,000/min. = 98,000 birds. at 5:49 I noticed that many of the overhead streaming birds had dropped low and were coming into the preserve to roost. This occurred between 5:49 and 6:00 pm at the rate of 300 per minute (surely more than that but when flying much lower my overall field of view was significantly decreased). 11 min. x 300= 3300. Total count for the hour of counting = 98,000+ 3300= 101,330
テクニカル・インフォメーション
- モデル
- COOLPIX P950
- ISO
- 100
- 焦点距離
- 15.2 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/4.0
- シャッタースピード
- 0.01 sec
- 大きさ
- 4608 pixels x 3456 pixels
- オリジナルのファイルサイズ
- 1.84 MB