Lyric discussion by the_california_one 

i think this song is about telling someone you loved for a long time about your feelings for them- "And I’m not sure if I’m singing for the love of it or for the love of you/But I’ve flown a long way honey hear my confession then I’ll go" and "its been a long time coming..."

the snow is a metaphor for his fear of rejection and i agree that the birds are metaphors for women, but only one matters- she is refered to as "you".

Now, it doesn't matter to him if she reciprocates, he just has to let her know. "I'd rather be the one who loved than to be loved and never even know." and he is underneath her window, "singing" to her.

An error occured.