[Length 8 in. Wingspan 12.5 in.]

This Rose-breasted Grosbeak was photographed at the Valley Land Fund's Sheepshead Lots, South Padre Island, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens + Nikkor TC17E II 1.7x Teleconverter on a Nikon D7100 camera. (Date: September 30, 2016)

[Length 8 in. Wingspan 12.5 in.]

This female Rose-breasted Grosbeak was photographed at the Valley Land Fund's Sheepshead Avenue lots, South Padre Island, Texas. 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: May 07, 2018)

[Length 20 in. Wingspan 26 in.]

Dusky Grouse (formerly known as Blue Grouse) are residents of the Rocky Mountains and foothills of the western US and Canada. This "Southern Rockies" Dusky Grouse was photographed (after it emerged from underneath one of the cars in the parking lot!) at Yovimpa Point in Bryce Canyon National Park, Utah, USA. Photo taken with a 300mm f4.5 Nikkor ED lens on Kodachrome 64 film. (Date: August 1980)

[Length 20 in. Wingspan 26 in.]

Dusky Grouse (formerly known as Blue Grouse) are residents of the Rocky Mountains and foothills of the western US and Canada. This "Southern Rockies" Dusky Grouse was photographed at Dinosaur National Monument, Dinosaur, Colorado, 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 3, 2015)

[Length 15.5 in. Wingspan 24 in.]

This Red Grouse was photographed at Lochindorb, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 20, 2004)

[Length 15.5 in. Wingspan 24 in.]

This Red Grouse was photographed at Lochindorb, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 19, 2004)

[Length 15.5 in. Wingspan 24 in.]

These Red Grouse fledglings were photographed at Lochindorb, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 20, 2004)

[Length 15.5 in. Wingspan 24 in.]

This Red Grouse was photographed at Lochindorb, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 20, 2004)

[Length 17 in. Wingspan 22 in.]

This Ruffed Grouse was photographed near Riding Mountain National Park in Manitoba, Canada. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: June 1991)