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观察细节
Rough estimate could only hear, I started hearing them around 7:30 and basically had an almost continuous stream until about midnight, about 10:30 was the peak, with flocks of hundreds and hundreds flying over for about 10-20 minutes straight. In that 10-20 minute time period I guessed as many as 2000, though for data sake I stuck with estimate for this one checklist.
技术信息
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- 489.35 KB