The categories in this simple-to-use Rare Birds of San Diego County – ABC List were determined using a hybrid approach, combining the overall number of records for the county with each species occurrence (and “chase-ability”!) in the county during the past 5 or more years.
If a species has not occurred for several years, it may get elevated to the next higher rarity category; conversely, species for which there has been, relatively speaking, a recent abundance of reports may get lowered in rarity category.
Click the link below to download a PDF document of the Rare Birds of San Diego County:
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