ML445223331
- 年龄和性别
- 成年雄鸟 - 1
- 行为
- 求偶、炫耀或交配
- 发声
- 非声音
- 回放
- 未说明
媒体文件注释
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.
观察细节
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.
额外物种
技术信息
- 录音机
- iPhone 11
- 话筒
- internal
- 附件
- 原始文件大小
- 4.83 MB