[Length 4 in. Wingspan 5.25 in.]

This female Anna's Hummingbird was photographed in the foothills near Arroyo Grande, California, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: September 1997)

[Length 4 in. Wingspan 5.25 in.]

This male Anna's Hummingbird was photographed at Beatty's Lodge, Miller Canyon, Sierra Vista, Arizona, USA. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens (EFL=450mm) on a Nikon D200 camera. (Date: August 6, 2007)

[Length 4 in. Wingspan 5.25 in.]

This male Anna's Hummingbird was photographed at the Sabal Palms Sanctuary, Brownsville, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D7000 camera. (Date: January 21, 2012)

[Length 4 in. Wingspan 5.25 in.]

This male Anna's Hummingbird was photographed at the Sabal Palms Sanctuary, Brownsville, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D7000 camera. (Date: January 21, 2012)

[Length 4 in. Wingspan 5.25 in.]

This male Anna's Hummingbird was photographed at the Sabal Palms Sanctuary, Brownsville, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D7000 camera. (Date: January 21, 2012)

[Length 4.25 in. Wingspan 5.75 in.]

This female (on its nest) Berylline Hummingbird was photographed at Cave Creek Canyon, Portal, Arizona, USA. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D200 camera. (Date: August 7, 2007)

[Length 4.25 in. Wingspan 5.75 in.]

This female (on its nest) Berylline Hummingbird was photographed at Cave Creek Canyon, Portal, Arizona, USA. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D200 camera. (Date: August 7, 2007)

[Length 4.25 in. Wingspan 5.75 in.]

This female (returning to its nest) Berylline Hummingbird was photographed at Cave Creek Canyon, Portal, Arizona, USA. The blur to the right of the nest at 2 o'clock is the bird in flight. The cinnamon wing patch, although very blurred in this photograph, is visible as a diagnostic field mark. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D200 camera. (Date: August 7, 2007)

[Length 4.25 in. Wingspan 5.75 in.]

This female (on its nest) Berylline Hummingbird was photographed at Cave Creek Canyon, Portal, Arizona, USA. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D200 camera. (Date: August 7, 2007)