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期望数量
Relative abundance is depicted for each season along a color gradient from a light color indicating lower relative abundance to a dark color indicating a higher relative abundance. Relative abundance is the estimated average count of individuals detected by an eBirder during a 1 hour, 1 kilometer traveling checklist at the optimal time of day for each species.
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Breeding season
14日 6月 - 17日 8月
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Non-breeding season
23日 11月 - 22日 2月
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Pre-breeding migratory season
1日 3月 - 7日 6月
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Post-breeding migratory season
24日 8月 - 16日 11月
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Seasons timeline
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