King Eider - Anonymous
報告

投稿者

日付

場所

Allens Pond WS--Beach Loop (Mass Audubon)
Bristol, Massachusetts, United States
この場所の視聴覚メディア 図解チェックリスト
地図
地図 座標: 41.5070668, -71.023618
年齢と性別
成幼不明、メス - 1

観察結果の詳細

First attached photo depicts 3 female Eiders. While I had never encountered one, the middle duck appears to bear three characteristics of a female King Eider: 1. The bill appears black 2. the head appears rounded and 3. the duck in question seems to lack a long, sloping forehead like the female Common Eiders flanking it. 2nd attached photo is a cropped enlargement depicting a female Common Eider on the left and the Eider in question on the right.

テクニカル・インフォメーション

焦点距離
600 mm
Fストップ
f/6.7
シャッタースピード
1/1500 sec
大きさ
971 pixels x 675 pixels
オリジナルのファイルサイズ
395.02 KB