kHz
- 性別與年齡
- 年齡性別未知 - 1
- 聲音
- 歌聲
- 回播
- 未確定
影音備註
One bird, heard only. Calls faint and nearly drowned out by Red-winged Blackbirds and sparrows. Bittern calls were heard every 8-10 seconds for a total of about 30 calls. ML: This is the "dovelike cooing" noted in BNA.
其他鳥種
技術資訊
- 錄音機
- MAGNEMITE UNSPECIFIED MODEL
- 麥克風
- 配件
- Parabola 101.6cm (40in)
檔案資訊
- 已數化的
- 12 Jul 2000 - Martha Fischer