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ML580515051
作者
Nancy Overholtz 该用户提供的媒体文件 档案
日期
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Owens River Gorge/Upper Power Plant Road
Mono, California, United States
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观察细节
As we watched the Swifts, we saw a pair appear to clasp feet and spiral toward the ground, much like Eagles. We could not be sure if this was mating or competition. Either way, it was spectacular.
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