Back to Index Tree Swallow Tachycineta bicolor    Copyright David Seibel, 2006 (#1264) | Send Comment Camera: Canon EOS 20D Exposure: 1/1250 sec, f/7.1, ISO 400 Lens: Canon 500mm f/4L IS + 1.4x II TC Date: June 26, 2006 Location: Audubon National Wildlife Refuge, North Dakota, USA