ML48258051
投稿者
Bruce Aird この投稿者による視聴覚メディア
日付
場所
Salton Sea SRA--Salt Creek Beach
Riverside, California, United States
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
- タグ
- 生息環境
観察結果の詳細
Adult or possibly transitioning from third cycle. Very dark mantle. Yellow legs, feet, and eyes. Yellow bill with red spot, and some smudgy black - the feature that makes age determination trickier. Presumably, a full adult would have no black remaining on the bill. Slightly smaller than Herring Gulls present, but larger and considerably darker on the mantle than California Gulls available for comparison. Bill quite straight, without significant gonydial angle, which along with size and bill coloration features, rules out Yellow-footed Gull. This bird showed very heavy streaking on the crown, nape and neck. Very striking feature which is also more consistent with Lesser Black-backed Gull than Yellow-footed Gull.
テクニカル・インフォメーション
- モデル
- Canon EOS 7D Mark II
- レンズ
- EF100-400mm f/4.5-5.6L IS II USM
- ISO
- 400
- 焦点距離
- 400 mm
- フラッシュ
- Flash did not fire, auto
- Fストップ
- f/5.6
- シャッタースピード
- 1/2000 sec
- 大きさ
- 1896 pixels x 1428 pixels
- オリジナルのファイルサイズ
- 1.08 MB