Possibly my favorite poem of all time, "Skunk Hour" by Robert Lowell, is dedicated to Elizabeth Bishop, so I had to check her out.

Many of these poems are impressionistic, capturing a moment - like "Late Air". Some use extended metaphor, like "The Unbeliever" - taking a line from John Bunyan about the dangers of unbelief and twisting it into something different - making it seem that the atheist is both able to dream differently than those on the deck below:

Asleep he was transported there
asleep he curled
in a gilded ball at the mast's top,
or climbed inside
a gilded bird, or blindly seated himself astride

The metaphor becomes something strange and mysterious - what is the unbeliever? A dreamer? A sage?

Bishop likes to weave natural imagery in with the emotions and ideas expressed in her poems - a classic example is "The Fish", where the defeat of the veteran fish by the fisherman is problematized by the imagery of the decrepit boat, where there is a "pool of bilge / where oil had spread a rainbow / around the rusted engine"

The fish is something noble battling against the crude ugly trappings of man.