Name That Poet #6

We had a very unusual burst of winter the other day, perhaps some remnants of snow and ice left over to give one final show. It left the roads and sidewalks glazed and the tree branches coated with its frostiness. It made me think of this. So, let's try and guess the poet from the lines of this very appropriate poem.

When I see birches bend to left and right
Across the lines of straighter darker trees,
I like to think some boy's been swinging them.
But swinging doesn't bend them down to stay.
Icestorms do that. Often you must have seen them
Loaded with ice a sunny winter morning
After a rain. They click upon themselves
As the breeze rises, and turn many-colored
As the stir cracks and crazes their enamel.
Soon the sun's warmth makes them shed crystal shells
Shattering and avalanching on the snow-crust--
Such heaps of broken glass to sweep away
You'd think the inner dome of heaven had fallen.