Nothing has been added to this photo.
The bird and the person (and the forest, of course) are all real. There would be no fun in it for me otherwise.
I uploaded a square and colour version of this photo before, but I wasn't happy with it. I'm more happy with this version
---Post-processing: I upped the contrast, lowered the saturation and reduced the noise.
Location: Groevenbeek, the Netherlands.