| Birds | Berylline Hummingbird Amazilia beryllina    Copyright David Seibel, 2007 (#2027) | Send Comment Camera: Canon EOS 20D Exposure: 1/250 sec, f/8.0, ISO 200 Lens: Canon 500mm f/4L IS + 1.4x II TC Date: August 10, 2007 Location: Cave Creek Canyon, Arizona, USA Description: The sex of this bird was deduced from the fact that it was building the nest (note the nest material in its bill); male hummingbirds almost never assist in nesting activities.