Impression of a bird left on a window. The imprints are caused by the bird’s powder down, a special type of down which helps feathers to grow. In some species, the tips of the barbules on powder down feathers disintegrate, forming fine particles of keratin, which appear as a powder, or ‘feather dust’. When a bird strikes a glass pane, the power is shaken lose and adheres to the glass. The effects are simply amazing
Check out this awesome coffee art from Giulia b, also known as bernulia on Instagram.