ML646242308
投稿者
Ned Mueller この投稿者による視聴覚メディア プロフィール
日付
場所
Riserva Naturale Nazzano Tevere-Farfa--NORD (Poggio Mirteto Scalo, ponte)
Lazio, Italy
この場所の視聴覚メディア 図解チェックリスト- 年齢
- 指定なし
- 性別
- 指定なし
観察結果の詳細
Counting method: The roost naturally divided into 4 groups. (see panorama photo of all 4 groups). For sufficient resolution each group was photographed 3 times at 5:38, 5:45, and 5:50 PM, respectively. Only the 4 images from the last series at 5:50 PM are included here. For the 3 series, the count totals were 253, 302, and 346. Nine more egrets arrived toward dark after the third count bringing the visible roost size to 355. This may be a small underestimate as in the images some birds appeared as gray dots hidden in the foliage. The same census yesterday but with less clear photos totaled 319 Cattle Egrets.
テクニカル・インフォメーション
- モデル
- Canon PowerShot SX70 HS
- ISO
- 2500
- フラッシュ
- Flash did not fire
- 大きさ
- 4753 pixels x 2912 pixels
- オリジナルのファイルサイズ
- 3.77 MB