Blue Tit

This photo was taken in my garden during February 2020.
The technical information is as follows.
Camera - Canon EOS RP
Shutter speed - 1/800
Aperture - f8.0
Lens - Canon EF 500mm f4.0 L IS USM plus Kenko 20mm Extension Tubes
Focal Length - 500mm
ISO - 3200
Tripod