Which literary device is used to highlight the power of a skylark's song in these lines from a poem?

like a poet hidden
in the light of thought;
singing hymns unbidden,
till the world is wrought
to sympathy with hopes and fears it heeded not.
(from "ode to a skylark" by percy bysshe shelly)

I believe that, in these specific lines, the literary device is indeed a simile.

Explanation:

It is known that in his poem "To a Skylark", Shelly employed several types of literary devices, among which we have allusions, an apostrophe, and a couple of metaphors as well. But since we should focus on the lines offered in the question, the literary device that is evident from the get-go is the simile.

A simile is a figure of speech used with the intention of making a comparison - stating a similarity - between two different things. It uses words such as "as" or "like". In that sense, it differs from the metaphor. The simile makes a direct comparison while the metaphor makes an indirect one.

The very first line, "Like a poet hidden", compares the skylark to a poet by the means a simile. The other lines simply prolong such comparison by attributing actions and characteristics of a poet to the bird.

write a five paragraph essay, you were taught to have three body paragraphs. a university essay is more flexible than that, depending on its length and on what it is trying to say. a short university essay may have three body paragraphs, but it may have more.

each morning i wrote my name

on the dusty cabinet, then crossed

the dining table in script, scrawled

in capitals on the backs of chairs,

practicing signatures like scales

while mother followed squirting

linseed from a burping can