投稿者
日付
場所
- 年齢
- 指定なし
- 性別
- 指定なし
観察結果の詳細
Thought at first this was a Vesper Sparrow owing to the noticeable prominent eye ring and the fact it was paler and larger than nearby Savannah Sparrows. I only saw it for about 10 seconds and it flushed behind a bramble hedge, so I had no view of its tail in flight. I could not refind it and I only managed out-of-focus photos. I later concluded that the bird was a Savannah Sparrow, likely one of the larger Alaskan subspecies. The obviously contrasting rufous tertials and greater coverts and prominent pale supercillium with little apparent darker streaking, particularly behind the eye, led me to identify it as a Savannah despite the prominent eye ring. Size and shape of the bill and apparent length of tail also point away from Vesper, not to mention the fact that Vesper would be very rare at this location, particularly in January.
テクニカル・インフォメーション
- モデル
- Canon EOS REBEL T1i
- ISO
- 400
- 焦点距離
- 250 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/5.6
- シャッタースピード
- 1/250 sec
- 大きさ
- 1237 pixels x 1237 pixels
- オリジナルのファイルサイズ
- 1.04 MB