[Length 7 in. Wingspan 13.5 in.]

This male Western Bluebird was photographed at McDonald Observatory, Fort Davis, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D300 camera. (Date: December 21, 2009)

[Length 7 in. Wingspan 13.5 in.]

This male Western Bluebird was photographed at Yavapai Lodge, Grand Canyon National Park, Arizona, USA. Photo taken with a AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF-ED [II] lens (EFL=300mm) on a Nikon D7000 camera. (Date: September 21, 2011)

[Length 7 in. Wingspan 13.5 in.]

This immature Western Bluebird 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 2, 2013)

[Length 7 in. Wingspan 13.5 in.]

This female Western Bluebird was photographed at Ghost Ranch Conference Center, Abiquiu, New Mexico, 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: October 18, 2013)

[Length 5.75 in. Wingspan 9 in.]

Bluethroats are Old World thrushes which breed locally in small numbers in western and northern Alaska. The blue and red throat pattern is iridescent, like that of a hummingbird. This male, a spring migrant, was photographed along the base of Sevuokuk Mountain at the village of Gambell on St. Lawrence Island, Alaska, USA. Photo taken with a 300mm f4.5 Nikkor ED lens on Ektachrome 400 film pushed to 800. (Date: June 1989)

[Length 4.25 in. Wingspan xx in.]

This Chiffchaff was photographed at Sumburgh Hotel Gardens, Sumburgh, Mainland, Shetland, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 2, 2004)

[Length 7.5 in. Wingspan 11 in.]

The American Dipper is found along swift mountain streams throughout the western US, western Canada, and most of Alaska. It is a dark, stocky bird, known for suddenly diving into the water, where it hunts for food by "walking" along the bottom on the stream. It accomplishes this by going upstream with its head down, letting the rushing water press its compact body down while its feet grip the gravel and stones of the streambed. When it does fly, it follows the contour of the stream, rather than go in a straight line which would take it over dry land. This American Dipper was photographed at Lava Creek along the Grand Loop Road between Mammoth Hot Springs and Tower-Roosevelt, Yellowstone National Park, Wyoming, 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: June 14, 2016)

[Length 7.5 in. Wingspan 11 in.]

This American Dipper 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 2, 2013)