[Length 4.75 in. Wingspan 7.75 in.]

This female Cerulean Warbler was photographed at the Convention Center gardens, South Padre Island, Texas, USA. Photo taken with a AF-S VR Zoom-Nikkor 80-400mm f/4.5-5.6G IF-ED lens on a Nikon D3200 camera. (Date: April 25, 2013)

[Length 4.75 in. Wingspan 7.75 in.]

This female Cerulean Warbler was photographed at the Convention Center gardens, South Padre Island, Texas, USA. Photo taken with a AF-S VR Zoom-Nikkor 80-400mm f/4.5-5.6G IF-ED lens on a Nikon D3200 camera. (Date: April 25, 2013)

[Length 4.75 in. Wingspan 7.75 in.]

This male Cerulean Warbler was photographed in a park along the Delaware River in west central New Jersey, USA. Photo taken with a Soligor 300mm f5.6 lens on Ektachrome 200 film. (Date: June 1978)

[Length 4.75 in. Wingspan 7.75 in.]

This male Cerulean Warbler was photographed in a park along the Delaware River in west central New Jersey, USA. Photo taken with a Soligor 300mm f5.6 lens on Ektachrome 200 film. (Date: June 1978)

[Length 4.75 in. Wingspan 7.75 in.]

This drab Cerulean Warbler was photographed during fall migration at Higbee Beach in Cape May, New Jersey, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 200 film. (Date: September 1989)

[Length 5 in. Wingspan xx in.]

This Chestnut-capped Warbler (formerly lumped with Rufous-capped Warbler) was photographed at the ProAves El Dorado Reserve, Sierra Nevada de Santa Marta, Department Magdalena, Colombia. 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: June 10, 2009)

[Length 5 in. Wingspan 7.75 in.]

Chestnut-sided Warblers breed in the northeastern and Great Lakes states of the US, and southern Canada as far west as Alberta. They are found in transition woodlands throughout their range. The males are strikingly patterned with a golden crown, dark back, and rich chestnut sides. Females are similar in pattern and coloring, but are more subdued. This Chestnut-sided Warbler was photographed at Sabine Woods - TOS, Texas, USA. Photo taken with a Nikkor 70-200mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=600mm) on a Nikon D100 camera. (Date: May 12, 2006)

[Length 5 in. Wingspan 7.75 in.]

This Chestnut-sided Warbler was photographed at Sabine Woods - TOS, Texas, USA. Photo taken with a Nikkor 70-200mm EDAF-S VR f2.8 lens + Nikkor TC14E II 1.4x Teleconverter (EFL=420mm) on a Nikon D100 camera. (Date: May 12, 2006)

[Length 5 in. Wingspan 7.75 in.]

This male Chestnut-sided Warbler was photographed at Valley Land Fund's Sheepshead Street lots, South Padre Island, Texas, USA. Photo taken with a AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED lens (EFL=202mm) on a Nikon D300 camera. (Date: May 2, 2011)