kHz
ML56021951
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媒体文件注释
numerous Tree Swallows flying over lake at the same time
观察细节
group of six swimming around lake; approached within 50 m as they explored shoreline; closely observed with spotting scope (no hint of yellow on any bill, straight, massive culmen, black from bill encompassing the eye); making constant low calls (contact calls)
技术信息
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- 原始文件大小
- 6.06 MB