What's wrong with Bai Wenbird's mouth open?

Bai Wenbird often opens his mouth because it is too hot.It is best not to put it under the sun, you can hang it in a cool place, and at the same time, ventilation is better.The feeding is the same, but because the high temperature will accelerate the deterioration of the food, it is best to pour the feed that has not been eaten every day, and then change it to it.In addition, in order to keep your body clean, take a shower once a day and clean the bird cage regularly.