Terrific portrait and choosing F13 worked well for you b/c this entire bird is in focus and you achieved amazing details in those black feathers. Well done.
Nice portrait with good techs. The blacks look spot on and with lots of details. I'd likely add some canvas above (enough to match the amount of room behind the head). Perfect head angle.
Thanks Akos,Andreas, Marina & Daniel for your appreciation and suggestions. Daniel i will recrop the image according to your suggestion and post it at night. Thanks again.