A1_03497c_2500 
The nankeen kestrel is small, fast, and agile in the air. They are one of the few raptors who can hover.
A nankeen kestrel is a small raptor, weighing in at 200g, which is quite a contrast to the wedge-tail eagle, who can weigh 20 times as much. I had to crop this frame heavily to show you this little speed demon.
This image shot with the Sony 135mm GM lens on a Sony A1, at ISO 100 f/2.8 1/1000. Cropped from 8640 x 5760 down to 2500 x 1666.