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This new edition of David Allen Sibley's popular flashcard deck is a perfect knowledge builder and outdoor companion for birders from beginner to expert.
The face of each card shows two images of the bird—either male/female, juvenile/adult, or summer/winter depending on the degree of differentiation, with key identifying characteristics called out.
This new edition of David Allen Sibley's popular flashcard deck is a perfect knowledge builder and outdoor companion for birders from beginner to expert.
The face of each card shows two images of the bird—either male/female, juvenile/adult, or summer/winter depending on the degree of differentiation, with key identifying characteristics called out.