Ruddy Duck Swimming, Swan Cove, Chincoteague National Wildlife Refuge, Virginia; Canon EOS-1Ds Mark II; Aperture Priority and Evaluative Metering; 600mm f/4 L IS USM lens w/2X Extender at 1200mm; ISO 200, f/8 and 1/320 sec at zero; File ID: E0K8204; 4694 x 3130 crop.