First what I did here was quick and many people will disagree, which is good if they tell me what they would do.
I tried a high pass filter which works 75% of the time but it didnt for me here
You might like to try it on other photos of yours its good Hacker did a tutorial on it in 2007
http://www.talkphotography.co.uk/forums/showthread.php?t=28733
So what did I do
first made a duplicate layer
then using the lasso tool I lassoed the lower plumage, went filter, sharpen, unsharp mask and played till it was somewhat sharper re lassooed and repeated with the white plumage but not the eye and beak So both areas were sharpened different (some may say over sharpened) Next was layer, new adjustment layer, hue & saturation and put a bit of saturated colour into the beak
Using the mask and erase tool to remove any area that was over saturated
incidently the last bit is one way how selective colouring is done
Hope that helps I am learning just like you and there are some great tutorials or links to tutorials on this site you just have to look for them