I had the same idea, knowing that Sören is an artistic soul (look at the frame). So perhaps he picked these images for aesthetic and thematic effect.
I played around yesterday with the actions in these images. There is sitting or standing or being on top of something in the first image. Carrying or giving birth in the second, releasing in the third, flocking (being together?) in the forth, and hanging or being chained in the last one.
I couldn't figure out the answer though.