ML351911811
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
!! Apparent F feeding on flowers NW of main burn, approx here: 47.1834434, -121.4364472. This was a small looking selasphorus hummingbird with a short bill and short tail (wingtips jutting past tail tip). Photo’d by Raphael and observed by both of us for the short time the bird was in view. Since HY Rufous Hummingbirds with short tails and short bills complicate this ID, we sought help from experts. Carl shared unedited originals of Raphael’s photos with a friend (Sheri Williamson) who quickly responded “Absolutely a Calliope”. Citing her paper entitled “Fall Befuddlers: Broad-tailed, Rufous/Allen’s, and Calliope”, she writes ‘Rufous and Allen’s are relatively compact, big-headed, and barrel-chested with tapered outer primaries that give the folded wing a scythe-like shape. Calliopes have even bigger heads, plus shorter bills, shorter tails, and broad, curved outer primaries distinctly different from either Broad-tailed or Rufous/Allen’s.’ (latter is from: http://fieldguidetohummingbirds.com/broad-tailed-rufous-allens-calliope/) To us, comparing the outer primaries seen in Raphael’s second photo to those seen in flight shots of female Rufous Hummingbirds in the Macaulay library support this finding as well. All photos here by Raphael.
テクニカル・インフォメーション
- モデル
- Canon EOS REBEL T3i
- レンズ
- EF75-300mm f/4-5.6 IS USM
- ISO
- 3200
- 焦点距離
- 300 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
- 1/1600 sec
- 大きさ
- 2048 pixels x 1365 pixels
- オリジナルのファイルサイズ
- 938.94 KB