I have taken this shot in Khojir national park which is east of Tehran. I tried to take this shot more than 40 times on the top of the mountain near nest of a Long-Legged Buzzrad , but unfortunately just 3 of them were good enough!
Shutter Speed: 1/500Sec
Aperture Value: F8.0
ISO Speed:200
Focal Length: 300.0 mm
AF mode: One-Shot AF
10%crop
You have a nice pose and did a good job determining your exposure. I like the fact that the bird looks straight at you. I keeps the eye focused on the bird's head. Using fill flash could have helped improve the lighting under the wings and would have added a catchlight in the eyes.