ML68650351
- 年齡
- 未確定
- 性別
- 未確定
- 回播
- 未使用回播
觀察細節
Roost. 6:55p: survey started. 6:57p: four swifts flew by. 7:47p: one swift swooped low over chimney. 7:49p: more flying lower. 7:53p: three dropped into chimney. 7:58p - 8:04p: majority of birds dropped into chimney. 8:17p: last bird dropped in. 8:23p: survey ended.
技術資訊
- 錄音機
- 麥克風
- 配件
- 原始檔案大小
- 4.86 MB