ML445223331
投稿者
Anonymous この投稿者による視聴覚メディア
日付
場所
Grasslands
Kittitas, Washington, United States
この場所の視聴覚メディア 図解チェックリスト- 年齢と性別
- 成鳥オス - 1
- 行動
- 求愛、ディスプレイ、交尾
- 音声
- 非発声
- 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
Male Costa's Hummingbird performing a dive display to a female Anna's Hummingbird. The Anna's was in the process of constructing a nest. The nest was incomplete and had no eggs at the time and consisted of only of a thin layer of spider silk.
観察結果の詳細
Small green hummingbird with a short tail, purple, helmeted gorget with long gorget tails. Green breast with whitish throat and white ear patch. The bird was seen performing a shallow "U"-shaped dive display for an Anna's female. The dive display produced a high-pitched rising and then descending noise. The dive display sounds are drowned out by a noisy House Finch but are easily visible on the spectrogram and consist of a thin, rising then falling whistle approaching 10k Hz at the highest pitch.
追加される種
テクニカル・インフォメーション
- レコーダー
- iPhone 11
- マイク
- internal
- アクセサリ
- オリジナルのファイルサイズ
- 4.83 MB