ML410971801
投稿者
日付
場所
- 年齢と性別
- 成鳥、性別不明 - 2
- 行動
- 飛んでいる
観察結果の詳細
Continuing colossal beasts, originally reported (large counts anyway) on 1/13/22 by L. Huber, and I think A. Perla (thank you!). As we pulled up, two separate duos came in trumpeting, presumably from the pond at Hwy 149 and 99. All in all, there could have easily been 45+ birds, but some eventually seemed to work their way over the small ridge, heading downhill and out of sight. Our count of 33 represents a conservative number of mostly adults and few juvs. Large, gorgeous, concolorate swans. Notably larger than nearby TUSW, with some good diagnostic looks at various comparative field marks. For example, overall structure and shape, shape of the bill, facial feathering and voice were all observed/heard. Aside from size difference, TRUS had larger bills and the shape of the feathering below the eye abutting the bill forms a smooth line/arch to the lower mandible, whereas the TUSW generally showed a straight line forward that breaks downward towards the lower mandible at a much greater angle. Overall, amazing birds to see, study and hear!
テクニカル・インフォメーション
- モデル
- ILCE-9
- レンズ
- FE 200-600mm F5.6-6.3 G OSS
- ISO
- 400
- 焦点距離
- 600 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
- 1/1000 sec
- 大きさ
- 5391 pixels x 3594 pixels
- オリジナルのファイルサイズ
- 3.9 MB