Great Tit Chicks after 13 days

This photo was taken in my garden during May 2011.
The technical information is as follows.
Camera - Canon EOS 5D Mk II
Shutter speed - 1/200
Aperture - f18.0
Lens - Canon EF 100mm f2.8 Macro USM
Focal Length - 100mm
ISO - 200
Marumi DRF14 Macro Ring Flash