ML445223331
Přispěvatel
Anonymous Média od tohoto přispěvatele
Datum
Lokalita
Grasslands
Kittitas, Washington, United States
Média z této lokality Rozšířený seznam druhů- Věk a pohlaví
- Dospělý samec - 1
- Chování
- Tok nebo páření
- Zvuky
- Nevokální
- Hlasová provokace
- Nespecifikováno
Poznámky
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.
Podrobnosti k pozorování
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.
Další druhy
Technické informace
- Rekordér
- iPhone 11
- Mikrofon
- internal
- Příslušenství
- Původní velikost souboru
- 4.83 MB