ML540516951
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
Was taking lots of photos of gulls off the back of the CM-Lewes ferry as it came into dock at Lewes. Reviewing them a few days later I found two photos of this bird. It is presumably 4th-cycle, almost adult, with some dark on the primary coverts and faint marbling on central tail feathers. Thayer's seems the best fit for this bird: the outer webs of the outer primaries are dull, not glossy black; inner webs are darkish-grey; P5 has only a very small mark and there are large tongue tips to P6-8. The eye is darkish,not strikingly pale, and the orbital ring seems to be pink not yellow/orange. The legs and feet look a deep pink color. Head and bill structure seem OK for a male Thayer's and this form often has as much or more dark in the wing as an adult. We do get "white-winged" HERG in winter but these differ in a number of ways: the black that is present is usually glossy black, and the inner webs are pale grey not darkish grey, some bare parts colors would also be expected to be different. Did not notice this bird at the time and only found 2 photos of it. ID discussed on N American Gulls FB page.
テクニカル・インフォメーション
- モデル
- NIKON D7500
- レンズ
- 300.0 mm f/4.0
- ISO
- 450
- 焦点距離
- 300 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/4.0
- シャッタースピード
- 1/1000 sec
- 大きさ
- 2711 pixels x 1597 pixels
- オリジナルのファイルサイズ
- 2.7 MB