Boat-Tailed Grackle Calling, Salt Water Marsh, Assateague National Seashore, Virginia; Canon EOS-1Ds Mark II, 600mm f/4 L IS USM lens w/2X Extender at 1200mm;Incident Metered Manual Exposure; ISO 800, f/11 and 1/800 sec at zero; File ID: E0K9452, full image 4992 x 3328.