ML593313031
投稿者
George Chrisman この投稿者による視聴覚メディア プロフィール
日付
場所
Coyote Point County Park--yacht club, harbor and freshwater marsh
San Mateo, California, United States
この場所の視聴覚メディア 図解チェックリスト- 年齢
- 指定なし
- 性別
- 指定なし
観察結果の詳細
I counted 7 very small terns roosting on the cement block several hundred yards east of the yacht harbor. All appeared half the size of the juvenile Forster’s Terns that were roosting on the shell bar, foraging in the Bay, and would also rest on the concrete blocks for good size comparison. Bills looked yellow as opposed to orange when viewed with a scope. They also showed two black primaries when they occasionally moved in flight along the cement block. Photos are distant, but show size comparison and color patterns, even though they are not great shots. Too far with a heat shimmer for such a small bird.
テクニカル・インフォメーション
- モデル
- Canon PowerShot SX70 HS
- レンズ
- 3.8-247mm
- ISO
- 100
- 焦点距離
- 247 mm
- フラッシュ
- Flash did not fire
- Fストップ
- f/6.5
- シャッタースピード
- 1/640 sec
- 大きさ
- 3573 pixels x 2918 pixels
- オリジナルのファイルサイズ
- 980.15 KB