How many days do the yellow bird hatch eggs

The embroidered eggs are about 12-14 days.The breeding period of this bird started from April, until July, and some birds began to build nests in March.Its nest is generally hang -up, and some are cup -shaped. The materials are generally straw stems, grass leaves, moss, bark, and so on.After doing it, it will lay eggs. It can breed 1-2 nests a year. There are about 3-4 eggs per nest. The eggs are blue-green or white.