How long does the sparrow birth until flying

The sparrow can fly in 15 days.In addition to winter, this bird can reproduce in other seasons. It can produce 6 eggs at a time, and it takes 14 days to incubate.After breaking the shell, it usually takes about a month to leave the nest.Usually, two nests can be breed every year, and nests are built before breeding. Its nest is relatively simple. Generally, it is built with dry grass, wool, feathers, etc., and sometimes it will occupy the nest of Jiayan.