Is diatomaceous earth dangerous for quail?

Diatomaceous earth (DE) can be harmful to quail if ingested in large quantities or if it is of a type that contains high levels of crystalline silica, which can cause respiratory issues. However, food-grade diatomaceous earth, when used sparingly, can be safe and is often used as a natural pest control method. It's important to ensure the quail have access to clean water and are not exposed to excessive dust from DE. Always consult a veterinarian before introducing any new substance to their environment.