ML510920501
投稿者
Joe Grzybowski 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
Foss Lake--Sandy Beach
Custer, Oklahoma, 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
観察結果の詳細
Photos added. Note also photo in 30 Nov 2022 observation. Black duck-type individual with dark body and pale head and neck plumage. Eye line and slightly darker crown. Bill plain and unmarked and orange yellow (indicating female by several examining photos). Tail brown to tan, not white as in female Mallards and potential hybrids (noted most prominently in photo of bird flying away. Under tail and underparts plumage continuously dark as expected in Mexican Duck. Speculum bordered white in front and behind, not quite as prominently as in Mallard consistent with that expected in Mexican Duck and excluding American Black Duck and Mottled Duck.
テクニカル・インフォメーション
- モデル
- Canon EOS R7
- レンズ
- EF100-400mm f/4.5-5.6L IS USM
- ISO
- 800
- 焦点距離
- 400 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/6.3
- シャッタースピード
- 1/640 sec
- 大きさ
- 1731 pixels x 1060 pixels
- オリジナルのファイルサイズ
- 778.04 KB