Why is the Bird Bird vomiting?

Ban Wenbird vomiting may be because of illness.This kind of birds generally feed grains and other crops, or the seeds of grass seeds or other plants can also be selected, and insects can be fed only during reproduction.It is more common in South China and Southwest China in my country. It is suitable for viewing birds for cage. In addition to paying attention to feeding and drinking water, it is also necessary to clean up cages regularly to avoid poor environmental sanitary conditions, which affects the health of the birds. Essence