[Length 4.5 in. Wingspan 6 in.]

This "Pacific" Bushtit was photographed along the California coast near Monterey, California. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: November 1981)

[Length 4.5 in. Wingspan 6 in.]

This "Pacific" Bushtit was photographed in the foothills near Arroyo Grande, California. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: November 1997)

[Length 5.25 in. Wingspan 8 in.]

Common in woodlands and at feeders throughout much of Canada and the US, the almost identical Black-capped Chickadee (Poecile atricapillus) of the north and Carolina Chickadee (Poecile carolinensis) of the south formally announce themselves with a rapid CHICK-A-DEE-DEE-DEE call. They are inquisitive, and will often approach within several feet to investigate. This Black-capped Chickadee was photographed in northern New Jersey. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: June 1990)

[Length 5.25 in. Wingspan 8 in.]

This Black-capped Chickadee was photographed in northern New Jersey. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: February 1984)

[Length 5.5 in. Wingspan 8.5 in.]

This Boreal Chickadee was photographed near St. John's, Newfoundland, Canada. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: July 1994)

[Length 5.5 in. Wingspan 8.5 in.]

This Boreal Chickadee was photographed near Soldotna, Alaska. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 200 film. (Date: July 1994)

[Length 4.75 in. Wingspan 7.5 in.]

Common in woodlands and at feeders throughout much of Canada and the US, the almost identical Black-capped Chickadee (Poecile atricapillus) of the north and Carolina Chickadee (Poecile carolinensis) of the south formally announce themselves with a rapid CHICK-A-DEE-DEE-DEE call. They are inquisitive, and will often approach within several feet to investigate. This one was photographed near a feeder in central New Jersey. Photo taken with a Nikkor 180mm EDAF f2.8 lens on Kodachrome 200 film. (Date: December 1993)

[Length 4.75 in. Wingspan 7.5 in.]

This Carolina Chickadee was photographed near a feeder in central New Jersey. Photo taken with a Nikkor 180mm EDAF f2.8 lens on Kodachrome 200 film. (Date: December 1993)