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Oscar Wilhelmy: Black Rosy-Finch
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Oscar Wilhelmy: Black Rosy-Finch
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Oscar Wilhelmy: Clark's Nutcracker
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Oscar Wilhelmy: Gray Crowned Rosy-Finch
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Oscar Wilhelmy: Barrow's Goldeneyes
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Oscar Wilhelmy: Rosy Finches at the Alta Town Office Feeders (GCRF and BRFI)
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Oscar Wilhelmy: Deer Valley
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Oscar Wilhelmy: GCRF (Hepburn's)