This Is A Post About The Bird Trope

All weekend I have had a hard time thinking about this poem like the others we have read. This poem as it repeats the final line feels so open and freeing which contrast what is being said in the first stanza. So a goshawk a form of hawk that the speaker wants to have control of not out of the want to have it sit on the wrist but to be able to cross it off his "life-list". There seems to be contrast throughout the poem that for me makes this poem about identify as a poet writing within the bird trope. The speaker claims to have three specific jobs outside the cage. I connected back to Blake's red breasted robin, but he finishes the line claiming to be an austringer outside the cage. This is really perplexes me. Is the speaker caught between himself, a poet, who must write but is stuck with the baggage of the bird or is he a poet who finds himself pretending that he is a nurse, waiter, and janitor by conversing with the goshawk, who is the long line of poets?