ML503576121
投稿者
日付
場所
- 年齢と性別
- 未成鳥 性別不明 - 1
- タグ
- 生息環境
観察結果の詳細
Juvenile uniform grey/brown coloured gull approximately same size as smaller/female HERG at same location (Muir Lake). First noticed the pale edges (chevron pattern) on the tips of the primaries when wings closed. Smaller rounded head with smaller dainty bill vs. HERG. Checked the mantle and scapulars and they appeared to be original feathers (expected Aug-Apr on first year individuals) from what I could tell at a distance. Waited for some time in hopes of checking underside and topside of wings to be sure. A BAEA came in and flushed all of the HERG and this individual moved but stayed put. I photographed the gull in flight at this point and the faded looking outer primaries (reduced pigmentation) were evident on the top of the wing while the bright silvery white on the underside of the wings was also very obvious compared to the darker grey on HERG of the same age.
追加される種
テクニカル・インフォメーション
- モデル
- NIKON D4
- ISO
- 1600
- 焦点距離
- 600 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/8.0
- シャッタースピード
- 1/2500 sec
- 大きさ
- 2048 pixels x 1363 pixels
- オリジナルのファイルサイズ
- 1.59 MB