ML189825691
投稿者
日付
場所
- 年齢と性別
- 未成鳥 性別不明 - 2
- 行動
- 飛んでいる
観察結果の詳細
Small, strikingly black and white terns with small, fine, all black bills. The birds had much darker blackish grey upper surfaces on backs, wings, and tails that other more locally common small terns (Common and Arctic). The upper surfaces were not uniformly coloured - they were patchy with darker patches, but all of the feathers on the mantles and wings were darker than those on Common and Arctic Terns. The birds were obviously small (appeared significantly smaller than Common and Arctic Terns) and flew very erratically, dipping and diving in the marsh and among the marsh vegetation. The birds had smudgy, darkish caps on the rear of their crowns and solid, dark marks extending down behind the eyes. They also had some dark smudgy markings extending down onto their flanks/side of their necks. The birds were likely part of a large cohort of birds dislocated to NS by Hurricane Dorian. Photos attached.
テクニカル・インフォメーション
- モデル
- Canon EOS 80D
- レンズ
- EF100-400mm f/4.5-5.6L IS II USM
- ISO
- 800
- 焦点距離
- 400 mm
- フラッシュ
- Flash did not fire, auto
- Fストップ
- f/8.0
- シャッタースピード
- 1/1000 sec
- 大きさ
- 1512 pixels x 1008 pixels
- オリジナルのファイルサイズ
- 1.75 MB