ML445223331
Contributeur
Anonymous Fichiers multimédias de ce contributeur
Date
Site d'observation
Grasslands
Kittitas, Washington, United States
Fichiers multimédias de cet endroit Liste illustrée- Âge et sexe
- Mâle adulte - 1
- Comportements
- Cour, parade ou copulation
- Sons
- Non-vocal
- Repasse
- Non précisé
Commentaires
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.
Détails de l'observation
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.
Espèces additionnelles
Informations techniques
- Enregistreur
- iPhone 11
- Microphone
- internal
- Accessoires
- Taille originale du fichier
- 4.83 MB