Great Blue Heron Watching, Chincoteague National Wildlife Refuge, Wildlife Loop, Virginia, Wildlife Loop; Canon EOS-1Ds Mark II, 600mm f/4L IS USM lens with 2X Extender at 1200.0 mm, Manual Exposure and Pattern Metering; ISO 400, f/11 and 1/640 sec at zero, File ID _E0K7905, Image size 2925 x 4388 crop from 4992 x 3328 original.