How to raise sparrow winter

The sparrows are still relatively simple. In winter, its feathers will become fluffy, and there will be a lot of air in it to form a thermal insulation layer, which will not freeze to death.However, if it is raised artificially, it is best to put it in the room warm, and don't let it be blown by cold water.In addition, it is necessary to provide enough food. Generally, it is mixed with seeds. It is best to use warm water if you drink water, and you cannot use cold water.