ML615060768
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
Regularly occurs here. There was a mixed flock of AMCR and FICR in the parking lot and on top of the Dick's Sporting Goods and Marc's Grocery buildings. Then they started mobbing a Cooper’s Hawk. A few minutes later, the hawk and all the crows flew off over the buildings, heading southwest. I'm just guessing at the numbers for each species, but although I clearly heard both, it sounded like there were more AMCR (or at least the AMCR were being more vocal). When the flock was in flight, a handful of the birds seemed noticeably smaller than the rest, although I admit I usually cannot discern the size difference visually. The admittedly bad photos attached were the only ones I could snag of a bird while it was giving the FICR call. (For the most part, I was hearing both calls but unable to tell which individuals were giving each call.)
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
- 250
- 焦点距離
- 247 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
- 1/2000 sec
- 大きさ
- 5184 pixels x 3888 pixels
- オリジナルのファイルサイズ
- 2.24 MB