投稿者
日付
場所
- 年齢
- 指定なし
- 性別
- 指定なし
- 音声
- フライトコール
- 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
Type 3 evening grosbeak flight calls and trills recorded as three birds flew off. The first few calls were loud (when the birds were closest) but become much fainter as the distance grows. A common redpoll is audible in the last few seconds. Edits: trimmed and normalized to -3 dB.
観察結果の詳細
Identified as type 3 evening grosbeaks based on audio spectrograms of the flight calls that appear with this eBird list. The calls looks "blurry" with a pattern that looks somewhat like harmonics but compressed to a very small frequency range about the principal sound. The calls rise quickly in frequency from the beginning and then sweep downward more slowly afterward, giving the calls a skewed, chevron shape. I saw three of the birds fly out of a tree but continued to hear at least two others after the first three left the area. Type 3s are the ones expected in this part of the country and are the only type with "blurry" calls recorded in this area to date.
テクニカル・インフォメーション
- レコーダー
- Sony PCM-M10
- マイク
- Sennheiser ME67
- アクセサリ
- オリジナルのファイルサイズ
- 4.26 MB