I NEED IMMEDIATE HELP ANNOTATING THIS POEM! BRANLIEST WILL BE GIVEN.

Choices
BY TESS GALLAGHER
I go to the mountain side
of the house to cut saplings,
and clear a view to snow
on the mountain. But when I look up,
saw in hand, I see a nest clutched in
the uppermost branches.
I don’t cut that one.
I don’t cut the others either.
Suddenly, in every tree,
an unseen nest
where a mountain
would be.

Please help me understand what this poem means. I have to find the literary devices, but I'll do that myself.