ML274273231
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
On the flats loosely associating with skimmers and laughing gulls. First noticed an adultish herring like gull with a heavily streaked head that came down to its uppersides. I also noticed the slimmer bill and from a distance a black tip. These features caught my eye so I mentioned to all the other surveyors to look more closely at the bird. At this point I started suspecting we had a California gull but we could only see the front side as it was facing us. Clay Taylor, Richard Gibbons, Chris Bick and I decided to walk a little closer and get a different angle. At that point it was clear the bird was larger than the laughing gulls but not particularly large. We were then able to see it had a dark eye and a slight smudge of red on its black tipped bill. The legs were a dull green. Mantle was dark, only a tad lighter than the laughing gull mantles. The wingtips were long, pointy and black with three to four white tips visible. Altogether these features rule out herring. Ring-billed eliminated by eye color but also on this age of a bird, the streaking would be finer and more confined to the nape and not down to the sides. The gull is probably a third cycle bird or near-adult.
テクニカル・インフォメーション
- モデル
- E-M1MarkII
- レンズ
- OLYMPUS M.100-400mm F5.0-6.3
- ISO
- 200
- 焦点距離
- 400 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/6.3
- シャッタースピード
- 1/250 sec
- 大きさ
- 369 pixels x 249 pixels
- オリジナルのファイルサイズ
- 31.06 KB