Post-it note Poetry gets obscure

So I am delving further down the rabbit hole that is the wonder of Haiku and associated Japanese forms of poetry.  Today’s effort is below:

 

white wings

from darkness drop

silence

 

So with this Haiku I wanted to just describe the action and I wanted a very distinct image.  There’s the contrast of white with dark and I think the alliteration in darkness drop has I nice falling quality to it.

 

Oh and it’s ambiguous, I don’t know that it’s quite a riddle but you should be able to figure out what I am referring to here.