Answer:
Loss of freedom and free will.
Explanation:
While we may think the bird would be happy being inside a golden cage due to its high value, it wouldn't because it loses it's free will. It is being forced to stay in one spot, unable to make decisions for itself. Decisions, whether good or bad, are what help us grow and allow us to call our life our own. If a living being, no matter of what kind, has its free will and freedom taken, it loses its chance to learn and to grow, stunting them and leading to a dull life due to the feeling of powerlessness that they experience.