[Length 5 in. Wingspan 8 in.]

This male Townsend's Warbler hovering to pick an insect off an Alder Tree's catkin seed pod was photographed near Anchorage, Alaska. Photo taken with a Nikkor 300mm ED f4.5 lens on Ektachrome 800 film. (Date: May 1989)

[Length 5 in. Wingspan 8 in.]

This male Townsend's Warbler was photographed near Anchorage, Alaska. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 200 film. (Date: May 1989)

[Length 4.75 in. Wingspan 7.5 in.]

This Virginia's Warbler was photographed in the bushes along the Cache La Poudre River near Estes Park, Canada. Photo taken with a Nikkor 500mm f8.0 mirror lens on Ektachrome 800 film. (Date: June 1986)

[Length 4.75 in. Wingspan 7 in.]

This male Wilson's Warbler was photographed at the Frontera Audubon Nature Center, Brownsville, TX. 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: January 21, 2009)

[Length 4.75 in. Wingspan 7 in.]

This male Wilson's Warbler was photographed at Frontera Audubon, Weslaco, TX. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: January 12, 2005)

[Length 4.75 in. Wingspan 7 in.]

This male Wilson's Warbler was photographed at Frontera Audubon, Weslaco, TX. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: January 12, 2005)

[Length 4.75 in. Wingspan 7 in.]

This Wilson's Warbler was photographed at the SPI Convention Center gardens, South Padre Island, Texas. 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 D300 camera. (Date: October 1, 2010)

[Length 4.75 in. Wingspan 7 in.]

This male Wilson's Warbler was photographed during spring migration at Guadalupe Mountains national Park, Texas. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: June 2000)