English: Top: Unmarked live oak acorns. Middle: Acorns scored by common grackles, but dropped before being cracked open. Bottom: Pieces of acorns that have been scored, cracked open, and eaten by common grackles.
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Captions
Top: Unmarked live oak acorns. Middle: Acorns scored by common grackles, but probably dropped before being cracked open. Bottom: Pieces of acorns that have been scored, cracked open, and eaten by common grackles.