What's wrong with the fluffy of Bird Bird's feathers

Bird's feathers are fluffy because it is too cold.It must be kept warm in winter. It is suitable for growing in an environment of 20 ° C. Although it can tolerate low temperature, it is best to make the temperature higher.In addition to feeding mixed feeds such as rice, valley, and tadpoles, it is also necessary to add some foods with a lot of oil, which also helps improve cold resistance.The cages are generally placed indoors. If the temperature is high, it can be ventilated, and if the temperature is low, avoid being blown by the wind.