[Length 4.75 in. Wingspan 6 in.]

This House Wren was photographed at Piute Mountains, California, 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: July 3, 2013)

[Length 4.75 in. Wingspan 6 in.]

The House Wren breeds across most of the US and southern Canada. The male's explosive song of bubbling notes is unmistakable as he stakes out his territory. The male House Wren builds many nests in any appropriate cavity within his territory in the hopes of attracting a mate. He is pugnacious and will even evict other cavity-nesting birds, such as Chickadees, who have already started nest building. This male "Western" House Wren was photographed as he sang from a low perch in a tree at Devil's Tower National Monument in Wyoming, USA. Photo taken with a Nikkor 300mm f4.5 ED lens on Kodachrome 200 film. (Date: May 1992)

[Length 4 in. Wingspan 5.5 in.]

This Pacific Wren was photographed at Piute Mountains, California, 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: July 4, 2013)

[Length 4 in. Wingspan 5.5 in.]

This Pacific Wren was photographed at Sequoia National Forest, California, 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: July 5, 2013)

[Length 6 in. Wingspan 9 in.]

This singing Rock Wren was photographed at Shafter Lake, Andrews, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens + Nikkor TC14E II 1.4x Teleconverter (EFL=630mm) on a Nikon D200 camera. (Date: November 11, 2008)

[Length 6 in. Wingspan 9 in.]

This Rock Wren was photographed at Pine Canyon, Big Bend National Park, 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 D300 camera. (Date: December 11, 2010)

[Length 4.5 in. Wingspan 5.5 in.]

This Sedge Wren was photographed at Frontera Audubon, Weslaco, 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: May 3, 2009)

[Length 4.5 in. Wingspan 5.5 in.]

This Sedge Wren was photographed in the marshes at Brandon, Manitoba, Canada. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: June 1991)

[Length 4.5 in. Wingspan 5.5 in.]

This Sedge Wren was photographed at Charley's Pasture, Port Aransas, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens + Nikkor TC17E II 1.7x Teleconverter (EFL=750mm) on a Nikon D300 camera. (Date: April 17, 2010)