Ground up bones in raptors' food is to treat?

Ground up bones in raptors' food is primarily utilized to provide essential calcium and other nutrients that contribute to overall health. This practice can help prevent cramps that may arise from a deficiency in vital minerals. It supports the muscle function and overall physiological processes in birds by ensuring they receive adequate nutrition.

In the context of the other options, coccidiosis is a parasitic disease that affects the intestinal tract, often requiring specific medications or treatments to address the infection. Aspergillosis is a fungal infection that typically requires antifungal treatment rather than nutritional adjustments. Frounce, caused by a parasite found in pigeons, typically necessitates antiparasitic drugs for control. Therefore, grounding up bones to address such specific infections is not effective or suitable. Nutritional practices such as using ground bones focus more on maintaining general health and preventing issues like cramps associated with nutritional deficiencies.