[Length 6.5 in. Wingspan ?? in.]

This Gray-breasted Martin was photographed at Ammo Dump Ponds, Gamboa, Panama. Photo taken with a AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED lens (EFL=450mm) on a Nikon D7000 camera. (Date: August 4, 2011)

[Length 5 in. Wingspan xx in.]

This House Martin was photographed at Kildrummy, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 14, 2004)

[Length 8 in. Wingspan 18 in.]

This male Purple Martin was photographed in the Texas Hill Country, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: May 1999)

[Length 8 in. Wingspan 18 in.]

This male "Western" Purple Martin was photographed at Nojoqui Falls State Park, Solvang, 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: June 28, 2013)

[Length 8 in. Wingspan 18 in.]

This female Purple Martin was photographed at Nojoqui Falls County Park, Solvang, California, 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: July 7, 2013)

[Length 8 in. Wingspan 18 in.]

This male Purple Martin was photographed at Oak Hammock Marsh WMA, Stonewall, Manitoba, Canada. 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 15, 2018)

[Length 8 in. Wingspan 18 in.]

This immature Purple Martin was photographed at Oak Hammock Marsh WMA, Stonewall, Manitoba, Canada. 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 15, 2018)

[Length 8 in. Wingspan 18 in.]

This female Purple Martin was photographed at Brigantine NWR, New Jersey, USA. Photo taken with a Celestron 750mm f5.6 mirror lens on Ektachrome 200 film. (Date: April 1976)