Great Blue Heron in Breeding Plumage Venice Rookery, Venice, Florida; Canon EOS-1Ds Mark II, Canon 600mm f/4 L IS USM lens with 1.4X Extender at 840mm; Aperture Priority and Evaluative Metering, ISO 400, f/10 and 1/640 sec at -1; File ID E0K5157, 2884 x 4321 crop.