What color is the sparrow mouth

The sparrow mouth is black, usually conical, and the young bird is yellow.It requires a bird cage. You can also use a carton. In order to keep it warm, you usually need to prepare incandescent lamps. The temperature is controlled at about 20 ° C, so that it can grow healthily.Too small sparrows do not eat it by themselves, so they must be fed artificially, sandwiched the feed with gardenia, opened their mouths and stuffed them in. Usually, after a few times, it would take the initiative to open their mouths to eat.