What's wrong with the cuckoo always open your mouth?

Rhododendron often opens his mouth to dissipate heat.In the summer, to avoid the bird's long -term direct light, and to maintain good ventilation at the same time, it can cool down on the one hand, and on the other hand, it can avoid the occurrence of hypoxia.Feeding is the same as other seasons, but because high temperatures will accelerate the rotten food and can also cause drinking water to deteriorate. Therefore, it must be replaced diligently and changes once a day to prevent the birds from eating unclean.