投稿者
Ryan O'Donnell 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
San Diego Pelagic (27Sep15, 7)
San Diego, California, United States
この場所の視聴覚メディア 図解チェックリスト- 年齢と性別
- 成幼不明、性別不明 - 1
- 行動
- 飛んでいる
観察結果の詳細
Leader's list had two unidentified Leach's Storm-Petrels. I (RPO) identified one of those as Townsend's on the basis of photos (12:16 PM) showing long white rump, more than half of tail length (rather than about half of tail length of nominate Leach's), along with small compact body shape and prominent carpal bar reaching front edge of wing (ruling out Wilson's). Rare pale-rumped Chapman's wouldn't have rump this bright. Wedge-rumped Storm-Petrel eliminated mostly by probability and range, but also by apparently long tail fork of this bird and by white rump not reaching close enough to tail tip. I am new to identifying Leach's subspecies, and would appreciate correction if this assessment seems to be in error.
テクニカル・インフォメーション
- モデル
- NIKON D90
- ISO
- 500
- 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
- 1/2500 sec
- 大きさ
- 554 pixels x 368 pixels
- オリジナルのファイルサイズ
- 141.57 KB