Glauber's salt, on the other hand, is the common name for sodium sulfate, a hydrated sodium sulfate mineral. It has been used as a laxative and as an osmotic agent. It is also used in the production of glass and ceramics.
Neither Epsom salt nor Glauber's salt is generally used for racing pigeons. Pigeons are given various supplements and medications to enhance their health and performance, but Epsom salt and Glauber's salt are not commonly included. Instead, pigeon owners typically provide vitamins, electrolytes, and other nutritional supplements to their pigeons. Consult a veterinarian or a pigeon expert for specific recommendations on how to keep racing pigeons healthy and well-performing.