報告

投稿者

日付

場所

Patterson Pass
Alameda, California, United States
この場所の視聴覚メディア 図解チェックリスト
地図
地図 座標: 37.690947, -121.593378
年齢
指定なし
性別
指定なし
プレイバック（音声の再生）
指定なし

視聴覚メディア・ノート

Lots of them on a wire

観察結果の詳細

Probably more than a 150. See the two photos of the groups, one group was on the electrical wires and another on the fences and I counted approximately 150 birds total, there were more of them in the field between the two groups. On one of the recordings, there must have been 30 birds on a wire making this cat like hissing vocalizations. After a while they calmed down, nearly no sound can be heard on the recording, Then another flock of 60 birds at least descended on the wire and their vocalizations restarted, as if they were rearranging themselves on the wire and producing these sounds to make themselves heard by others.

テクニカル・インフォメーション

レコーダー
マイク
アクセサリ
オリジナルのファイルサイズ
1.39 MB