It looks like the woodpecker enjoys the song-bird balls

I don't know if this pictures qualifies for the positive negative space theme. I think it's ok for the blackwhite theme though.

[Diana]

Lovely shot.

[Jane Anderson]

I love the high-key photo!

[Henri Russell]

I think you are right. Lots of negative/positive space.

[mittens (Marilyn)]

Lovely capture, Bruni.

[Pyrrhula]

Great close up capture. Nice B+W editing.