Opinions on my poem please - Hummingbird?

I know what bothers me right from the start. Poetic license aside, the mental imagery of branches consuming a sun's dying breath, as though they were the actors upon the star's demise makes them seem sinister. The foreshadowing this does, doesn't match the overall tone of the poem. These branches, presumably, belong to the very trees that have grown by the end and become a forest. So the trees, signify the consuming of the very light of day. The sun should not be having a dying breath at all, it should be winking through the branches, as though the grandpop of the poem is smiling down at the subject. That would set off changes for the better, later in the poem, I think.