ML114156311
投稿者
Andrew S. Aldrich 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
Montrose Point Bird Sanctuary, Lincoln Park, Chicago
Cook, Illinois, 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
Identified as jaeger by shape (and alerted to its presence by the RBGU on the beach taking off simultaneously.) Initial impression was that it was small and graceful in comparison to RBGU nearby. Appeared dark at a distance from above, but had a noticeable white flash in the underwing. Also a pale collar and rump. It flew in much closer, maybe within 20-30 yards and Terry Walsh and I could see it had only 2 obvious white shafts on the upperwing. The extended central tail feathers were also rounded, not pointed. Photos show neatly barred black and white undertail and rump.
テクニカル・インフォメーション
- モデル
- Canon EOS 70D
- レンズ
- EF-S55-250mm f/4-5.6 IS
- ISO
- 100
- 焦点距離
- 250 mm
- フラッシュ
- Flash did not fire, auto
- Fストップ
- f/7.1
- シャッタースピード
- 1/400 sec
- 大きさ
- 1932 pixels x 1413 pixels
- オリジナルのファイルサイズ
- 1.26 MB