Thanks for your comments. I already have post-processed the original photo with paint shop pro 8. Actually I tried to vivid color's and eliminate flash reflections on the fly. I will try to play a little bit with the saturation even I think that it will not improve the overal photo.
Rafael: Hey Fidias look at the sparrows, they try to eat the appels in my fresco, picking in the wall. Fidias : You see the sparrows near my bronse-horse there in the park ? They wait till its having a shit!
Maybe you have to decrease the color's saturation
Good job!