kHz
ML231952161
- 年齡
- 未確定
- 性別
- 未確定
- 回播
- 未確定
觀察細節
Conservative estimate. Stopover roosting site. A cloud of swifts covering most of the square block, with most arriving from the west and north. First flock (~800 birds) began entering chimney around 7:55PM, and had finished well before dark. Once the first flock was in, a second flock (~1200 individuals) began staging at 8:00PM. This flock began entering the chimney around 8:15PM.
技術資訊
- 錄音機
- 麥克風
- 配件
- 原始檔案大小
- 2.15 MB