In these lines from Verse V of "Ode to a Nightingale" by John Keats, what is the speaker imagining? being a bird in the forest at night his life, after he has lost his vision being a tree in the springtime

In these lines from Verse V of "Ode to a Nightingale" by John Keats, the speaker is imagining his life, after he has lost his vision

Explanation:

The question is not complete since it does not provide the reference lines, here are the lines:

Read the excerpt.

I cannot see what flowers are at my feet,

Nor what soft incense hangs upon the boughs,

But, in embalmed darkness, guess each sweet

Wherewith the seasonable month endows

The grass, the thicket, and the fruit-tree wild;

White hawthorn, and the pastoral eglantine;

This lines from Verse V of "Ode to a Nightingale" by John Keats use some specific words that give you the hint of the narrator's blindness, these words are "in embalmed darkness", and as he can not see what is around he starts to describe everything using different senses just as any person who has lost their vision would do.