ML175330901
- 性別與年齡
- 成鳥,性別未知 - X
影音備註
digitized from slide; these are breeders flying up river mouth towards montane nesting sites
觀察細節
hundreds were flying from off the offshore and up the river over our heads, heading for nesting grounds high above in the mountains; many photos. This is a fair estimate of numbers
技術資訊
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