Thank you!
I tried a lot with those deep shadows, it's not easy to get them right. I tried them even darker (basically it becomes a solid black area fast) and also with pulled shadows -- but then the hundreds of limbs and trees become _very_ busy and destroy or at least disturb the big shapes of the picture. I'll have a look later - maybe today, maybe tomorrow, I'm about to go get some mulled wine on the christmas market nearby ;-)
Probably best would be to partially lighten the dead trees and the area with the bird. Will try.
Thanks again.