Answer:
Lowell uses words such as “song-birds,” “passion,” and “impatience” to suggest that life is brief and should be lived passionately.
Explanation:
The use of this words in Lowell's poem talks about how fast and volatile the emotions can be and at the same time how intense and necessary they are for the human to feel, a life without these emotions would be a wasted one, then the poem invites people to live and take all the experiences that life can offer with all the passion they have.