Greater Black-Backed Gull on Wharf Post, Port Mahon, Delaware; Canon EOS-1DS, Canon 600mm f/4 L IS USM lens with 2X Extender at 1200mm; Aperture Prioriety and Evaluative Metering; ISO 640, f/11 and 1/1000 sec at zero; File ID: 1FFT5453, 3866 x 2577 crop.