Amazon offers Mineral Block for Birds with Dried Dandelion, Calcium Supplement Bird Treat (82198) (Pack of 2) for + free shipping with Prime.

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Product Description:

HARI Mineral Block provides small birds with a rich source of calcium for strong bones and optimal growth. An assortment of tantalizing dried morsels are embedded within the mineral blocks to encourage birds to scrape and chew keeping their beaks trim and healthy all while providing additional enrichment. HARI Mineral Block is available in six flavorful varieties and is made of completely natural ingredients. Easily secure to the cage bars with the included cage clip.