The poem is written in the form of a sonnet, which is a 14-line poem with a specific rhyme scheme. The rhyme scheme of "A Lark" is ABBA ABBA CDCDCD. This rhyme scheme helps to create a sense of unity and structure in the poem, and it also emphasizes the musicality of the lark's song.
"A Lark" is a beautiful poem that celebrates the beauty and joy of nature. The poem is also a reminder that, even in the midst of darkness and despair, there can always be beauty and hope.