ML645246529
- 年齡
- 未確定
- 性別
- 未確定
- 行為
- 飛行中
- 聲音
- 叫聲
- 回播
- 未使用回播
觀察細節
Steady stream of vocal ravens heading upriver from 0810 to 0821 against a light but brisk winter breeze; collectively, groups of 57, 38, 43, and 10 with one loner a few minutes later. Large, bulky ravens and their calls separated from crows with gruff timbre; higher in pitch than typical CORA calls.
技術資訊
- 錄音機
- 麥克風
- 配件
- 原始檔案大小
- 4.18 MB