The males have a body that is 35-50 inches with long tail feathers that are about 60 inches and "are coloured a brilliant metallic green. This train is mainly formed of the bird's upper tail coverts, which are enormously elongated. Each feather is tipped with an iridescent eyespot that is ringed with blue and bronze. In courtship displays, the male elevates his tail, which lies under the train, thus elevating the train and bringing it forward. At the climax of this display the tail feathers are vibrated, giving the feathers of the train a shimmering appearance and making a rustling sound. When he is courting, the male lifts his tail feathers up in a beautiful display to attract the female." From Britannica Online, "Peacock".
In Job 38, God started answering Job and began asking him questions about many things. By the time we get to Job 39:13, God asks:
Gavest thou the goodly wings unto the peacocks? or wings and feathers unto the ostrich?
When Solomon was the King of Israel, he was very wise and wealthy. One of the things he did was to start a navy of ships. It appears that they would go off and every three years come back with, among other things, peacocks.
For the king had at sea a navy of Tharshish with the navy of Hiram: once in three years came the navy of Tharshish, bringing gold, and silver, ivory, and apes, and peacocks. (1 Kings 10:22 KJV)
For the king's ships went to Tarshish with the servants of Huram: every three years once came the ships of Tarshish bringing gold, and silver, ivory, and apes, and peacocks. (2 Chronicles 9:21 KJV)
The peacock has been used as an ornamental bird for many centuries. The video below gives a view of his feathers spread out.