| Birds | Great Gray Owl Strix nebulosa    Copyright David Seibel, 2013 (#6563) | Send Comment Camera: Canon EOS-1D Mark IV Exposure: 1/320 sec, f/5.6, ISO 3200 Lens: Canon 500mm f/4L IS + 1.4x II TC Date: March 9, 2013 Location: Duluth, Minnesota, USA