Beautiful detail in that neck, good catchlight and good b/g colour to show off his yellow beak.
Max keep up the good work - hope 2015 is great year for you in every way.
Did you learn how to do masks yet?
When you lighten or darken an image but don't want it all over, you make a layer mask see the symbol
at top of levels, you then take the brush tool making sure it is a soft brush
, then with the black square on top of the white square, third from bottom in tools at left hand side - brush over the area you want to keep as it was. You can switch to the white square on top if you want to correct an area you've brushed out. You can vary the opacity also if you just want to partially erase a levels move.
You should find a Utube video on most things you want to learn.
There's loads I still need to learn.