[Length 8.5 in. Wingspan 11 in.]

Cactus Wrens are residents of the southwestern US. This one was photographed in Cholla Cactus near Cabezon in southern California, USA. Photo taken with a 300mm f4.5 Nikkor ED lens on Kodachrome 200 film. (Date: October 1990)

[Length 8.5 in. Wingspan 11 in.]

This Cactus Wren at its nest was photographed at Big Bend National Park, Texas, USA. Photo taken with a Nikkor EDAF 300 f4.0 lens on Kodachrome 200 film. (Date: April 1993)

[Length 8.5 in. Wingspan 11 in.]

This Cactus Wren was photographed at 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 11, 2007)

[Length 8.5 in. Wingspan 11 in.]

This Cactus Wren was photographed at Cave Creek Ranch, Portal, Arizona, USA. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens (EFL=450mm) on a Nikon D200 camera. (Date: August 12, 2007)

[Length 8.5 in. Wingspan 11 in.]

This Cactus Wren was photographed at Davis Mountains State Park, Fort Davis, Texas, USA. Photo taken with a AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED lens (EFL=450mm) on a Nikon D200 camera. (Date: December 19, 2009)

[Length 5.75 in. Wingspan 7.5 in.]

This Canyon Wren was photographed at Dinosaur National Monument, Jensen, Utah, USA. Photo taken with a AF-S VR Zoom-Nikkor 80-400mm f/4.5-5.6G IF-ED lens on a Nikon D7100 camera. (Date: September 2, 2015)

[Length 5.5 in. Wingspan 7.5 in.]

Carolina Wrens are residents of all but the far northern states of the eastern US. Most of the birds in the US are the "Northern" type. In the Rio Grande Valley of southern Texas, the "Mexican" Carolina Wren replaces the "Northern" Carolina Wren. The "Mexican" Carolina Wren shows variable black-and-white spotting at the shoulder and variable barring on the flanks, which the "Northern" Carolina Wren lacks. The bird shown is the "Lomita" race of the "Mexican" Carolina Wren (note the spotting on the shoulder and faint barring on the flanks). This "Mexican" Carolina Wren was photographed at Santa Ana NWR in McAllen, Texas, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodak Elitechrome 200 film. (Date: April 2001)

[Length 5.5 in. Wingspan 7.5 in.]

This Carolina Wren was photographed at Allen William's "Wildscaped" yard, Pharr, Texas, USA. Photo taken with a AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED lens (EFL=270mm) on a Nikon D200 camera. (Date: May 6, 2009)

[Length 5.5 in. Wingspan 7.5 in.]

This Caroliona Wren was photographed at South Llano River State Park, Junction, Texas, 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: June 28, 2006)