How to keep warm in winter

In order to keep warm in winter, it is necessary to increase the amount of food and put it on a cage for the cage.The body of this bird is relatively small, and the length is only 9-12 cm. It usually lives on the trees. It is eaten by insects, nectar and fruits. It is mostly raised in Jiangsu, Zhejiang and Shanghai.But it is difficult. As soon as you don't pay attention, there will be water, pour hair, and turning hair.