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Powered by eBird期望数量
Estimates of relative abundance for every week of the year animated to show movement patterns. Relative abundance is the estimated average count of individuals detected by an eBirder during a 1 hour, 2 kilometer traveling checklist at the optimal time of day for each species.
了解更多Weekly Relative Abundance
0.441.611
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Week of the Year
4日 1月
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Playback Speed 0.25 sec
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