What's wrong with Hibari without breeding?

There may be many birds who do not reproduce. For example, the gender is not paired, the age is too young, or the usual food is insufficient, and the lack of certain nutrition.In different areas, this kind of bird has a different laying time. Each nest can produce 3-5 pieces, and it will be out of shell after 11 days.The chicks usually open their eyes on the fifth day, and they can fight for power on eight or nine days, but they cannot find food. Usually, they can live independently after 10 days.