If an animal has feathers, it is a bird; a feature derived from scales that covered the ancestral reptiles. Like reptiles, birds lay eggs to reproduce, but are much more involved in parental care.
Learning how to breed similar but more common species, such as Hill Mynahs, helps zoos to understand in turn how to breed endangered Bali Starlings or Rothschild's Mynahs. Zoo bred birds of this species have been returned to Bali to boost the remnant population. Last count there were only 37 in the wild.
Many male pheasants including Peacocks, show extremes of feather and plumage development. The rear view of a displaying Peacock reveals that the true tail is relatively small, but is essential in supporting the decorative train feathers