Penn-Plax Bird-Life Natural E Cuttlebone 6 Pack – Enriched with Omega 3 and Vitamin B1 – Great for All Birds6 PACK: Change things up for your pet with our 6 Pack of Natural E Cuttlebones! Along with providing additional vitamins and minerals, our Natural E Cuttlebones allow for a subtle and stimulating change in your pets daily life. ENRICHED WITH VITAMINS & MINERALS: Our Natural E Cuttlebones are enriched with Omega 3 Fatty Acids and Vitamin B1. All of these nutrients are necessary for maintaining healthy bones and plumage (feathers), as well as avian