Hi Ahmet,
First I applied auto levels in PS CS and then I adjusted colors. I also adujsted curve to make it a little darker and I applied USM to sharpen the squirrel more. I also selected the background and applied Neat Image to remove noise.
3rd shot shows a cluster of three individuals of Myotis nattereri. This is different from main post and first workshop. I took later with Canon 40D and 100-400L lens and it was haevily cropped.