| Birds | Caspian Tern Sterna caspia    Copyright David Seibel, 2008 (#1973) | Send Comment Camera: Canon EOS-1D Mark II N Exposure: 1/1000 sec, f/5.6, ISO 400 Lens: Canon 500mm f/4L IS + 1.4x II TC Date: March 16, 2008 Location: Laguna Atascosa National Wildlife Refuge, Texas, USA