I am a Canon user and work with the equipment below:

Cameras:

Canon EOS 1D Mk IV
Canon EOS 1D MK III

Lenses:

EF 500mm F4L IS
EF 100 – 400 L IS
EF 24-105 F4L IS
EF 17- 40 F4 L
EF 50mm F1.8 MK II
EF 1x4 and 2x converters
Speedlite 580 EX MK I

Other Gear :

Manfrotto 055 Classic Tripod with Benro Gimbal Head
Manfrotto Monopod
Lowepro Protrekker AW bag
Lowepro Lenstrekker AW III backpack
Hahnel remote release
Wildlife Watching Supplies Doorstop beanbag
Bushnell 10 x 42 Natureview Binoculars
Paramo Velez Smock, Gillet and Waterproof Trousers
Stealth Gear Rural Jacket and Trousers
Flask and hand warmers for those cold mornings !