Back to Index Cliff Swallow Petrochelidon pyrrhonota    Copyright David Seibel, 2011 (#12369) | Send Comment Camera: Canon EOS-1D Mark IV Exposure: 1/2000 sec, f/13.0, ISO 2000 Lens: Canon 500mm f/4L IS + 1.4x II TC Date: May 22, 2011 Location: Cheyenne Bottoms, Kansas, USA Description: Gathering mud for nest