I used flash as main light and cranked the ISO to make this image right at the end of our 3 days of shooting.
Camera Model: Canon EOS 5D
Date/Time: 2007:12:29 144:41
Shutter speed: 1/30 sec
Aperture: 5.6
Exposure mode: Manual
Flash: External E-TTL
Metering mode: Spot
Drive mode: Continuous: frame 1
ISO: 800
Lens: EF100-400mm f/4.5-5.6L IS USM
Focal length: 210mm
AF mode: AI Servo AF
Image size: 2912 x 4368
Image quality: Raw
White balance: Auto
Great Blue Heron
Sanibel Causeway