What happened to the crimson parrot always open mouth

The crimson parrot often opens his mouth because it is too hot.Because the temperature is too high, the birds will be violent, so it is best to avoid direct light in summer, and do not take the sun for too long. At the same time, it must be kept in circulation, because the breeding nest is easy to hypoxia.In addition, because the high temperature will accelerate the food of the food, the feed not eaten that day is taken out every night, and then the new food and drinking water are given the next day.