Water Rail Chick

This photo was taken at Little Boghead Nature Park, Bathgate, during July 2013.
The technical information is as follows.
Camera - Canon EOS 5D Mk II
Shutter speed - 1/1600
Aperture - f8.0
Lens - Canon EF 500mm f4.0 L IS USM
Focal Length - 500mm
ISO - 800
EV -2/3
Tripod