Cuttle fish bones
Cuttlebone is a hard fragile structure found inside cuttlefish. It is made mostly of calcium carbonate. The cuttlefish use it to control skimming. Cuttlebones have been utilized to make cleaning powder
Hang the cuttlebone in your flying creature's confine for your winged creature to bite on. ... All flying creatures need calcium, yet not all winged animals will eat typical cuttlebone. While most parrots will bite up cuttlebone, winged creatures, for example, mynahs or toucans won't eat it in its crude structure. In any case, you can just scratch cuttlebone into their delicate nourishment blend.
No exchange or return of goods.