What is going on with white -faced mountain sparrows?
White -faced sparrows are usually caused by food deterioration.If the food is stored properly, it will generally not deteriorate, but the food in the tank is too much, and it will be filled in each time it can't be eaten. In this way, the food below keeps existence, and it may be deteriorated.Therefore, you need to clean each other in time. It is best to pour it in the morning, and then add new ones.
