In Ode to a Nightingale, what qualities does the bird possess that narrator seeks and how do we see this in the poem?

To know the mind of a bird , one should at least be a
bird. Keats attributes the state of aesthetic -delight on the nightingale .It is
forgetful of the world of suffering , betrayal , and death .It lives in its ecstasy .As
the bird signifies Keats' concept of art and immortality , so does it possesses the
beauty of life .

In the poem no hungry generations tread it
down .From remotest past to the times of the poet , and further , it continues on its
glory of joy .The Biblical Ruth , medieval -emperors , maidens captivated by wicked
magicians , - got soothed and delighted with the bird's music .Certainly , the poet does
not mean an individual bird .From age to age the same trend of music perpetuates .This
implies that the stage of art achieved by an artist remains the same
.

The poet for achieving the state of the bird , tries to
send his senses into sleep .With the wings of imagination , he stations himself to the
bower of the bliss where the bird is singing with full-throated -ease
.