How long does the acacia bird born until flying?

It takes 15 days when the Acacia bird is born until flying.The breeding period of this bird is usually camped under the forest or bush, which is usually about 1-1.5 meters higher than the ground.The nest is cup -shaped, and it is mostly composed of moss, grass industry, bark, etc., which can lay eggs after the nest is built.It can produce 3-4 pieces each, color white or dark green, and at the same time with lilac spots.