ML510673041
投稿者
日付
場所
- 年齢
- 指定なし
- 性別
- 指定なし
- 行動
- 飛んでいる
観察結果の詳細
After spending a week trying to identify the Chaetura swift species hawking over the forest as viewed from the ‘Campo do Mariano’ this evening the birds finally came close enough to allow for photos, even doing so on multiple occasions. The first notable occasion was when three flew north together at close range but very quickly. Some photos were taken on this occasion, and on the next occurrence when one flew overhead from behind, heading east into the forest. On both occasions the photos clearly showed the presence of a pale white/pale grey tail band followed by a black tail. This distinctive stripe seems to rule out Chaetura sickii which would show a greyish rump extending into the tail, rather than a distinctive contrasting band. The only downside was that the birds were not heard to call in strong winds.
テクニカル・インフォメーション
- モデル
- Canon EOS R5
- レンズ
- RF100-500mm F4.5-7.1 L IS USM + EXTENDER RF1.4x
- ISO
- 800
- 焦点距離
- 599 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/10.0
- シャッタースピード
- 1/1600 sec
- 大きさ
- 1295 pixels x 864 pixels
- オリジナルのファイルサイズ
- 84.14 KB