ML25802521

年齢

指定なし

性別

指定なし

観察結果の詳細

See photos. A person was flying a drone, which flushed the entire Black Noddy colony on the rock/island in the bay at one time. The photos below are of that flying flock. One photo is of the entire flock, and two of them are of the left side / right side. I roughly counted the individual birds in the single photo, and came up with 375. If a more precise number is needed, the photos could be more accurately counted. Though there were many individuals flying in and out from the rock continuously, I was shocked at how high a number flushed! Of course, reasonable to assume that many individuals were not even in this flushed group at the time. ebird says this count is very high for this time and location, so let me know if this data needs to be further validated.

テクニカル・インフォメーション

モデル

Canon PowerShot SX50 HS

ISO

640

焦点距離

215 mm

フラッシュ

Flash did not fire, auto

Fストップ

f/6.5

シャッタースピード

1/320 sec

大きさ

4000 pixels x 2664 pixels

オリジナルのファイルサイズ

2.72 MB