Indian roller

[Prem Sagar]

I had visited Kanakpura on Saturday. I clicked this Indian roller there. This is a heavy crop.

Exif:
Mode: Aperture priority
Shutter speed : 1/400
Aperture : f8
ISO : 200
Focal length : 300mm (450 equiv on 35mm)
Camera : Nikon D90 with 70-300 VR lens
White balance: Auto
Metering : Matrix metering

Pls point out mistakes. How would you have shot the same picture?

Thanks for your feedback in advance.

Cheers,
Prem