What happened to the Taiping Birds without breeding

Taiping birds do not reproduce, indicating that it has not yet matured, or the environment is not suitable for reproduction.The breeding period of this bird is usually on the nest of the coniferous forests or coniferous broad-leaved mixed forests, and it will be selected near the stream or lake.Its nest is cup -shaped, usually composed of dry pine branches, deodorous stems, moss, etc., and there will be some pine needles and feathers.After the nest is built, the birds will start eggs, and each nest will produce 4-7 pieces.