[Length 12 in. Wingspan 31 in.]

Arctic Terns are circumpolar. In North America they breed throughout Alaska and northern Canada. They winter in the extreme south of all the world's oceans and coastal areas, which makes their migration one of the longest of any bird. This pair was photographed at the granary ponds in Churchill, Manitoba, Canada. Photo taken with a 300mm f4.5 Nikkor ED lens on Kodachrome 200 film. (Date: June 1991)

[Length 9.75 in. Wingspan 24 in.]

Black Terns occur in North America and Europe. In North America they are common breeding birds of ponds and lakes across much of the northcentral and northwestern US and southern Canada. This Black Tern was photographed at Bolivar Peninsula, 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 9, 2006)

[Length 9.75 in. Wingspan 24 in.]

This Black Tern molting into winter plumage was photographed on Honeymoon Island near Dunedin, Florida, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: August 1981)

[Length 9.75 in. Wingspan 24 in.]

This molting Black Tern in flight was photographed at Matagorda Beach, Texas, USA. Photo taken with a Nikkor EDAF 300 f4.0 lens on Kodachrome 200 film. (Date: August 2003)

[Length 9.75 in. Wingspan 24 in.]

This Black Tern was photographed at Bolivar Peninsula, Texas, USA. Photo taken with a Nikkor 300mm EDAF-S f4 lens + Nikkor TC14E II 1.4x Teleconverter (EFL=630mm) on a Nikon D100 camera. (Date: May 9, 2006)

[Length 9.75 in. Wingspan 24 in.]

This Black Tern was photographed at French Town Road, Port Bolivar, Texas, USA. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D200 camera. (Date: May 7, 2008)

[Length 9.75 in. Wingspan 24 in.]

This Black Tern was photographed at French Town Road, Port Bolivar, Texas, USA. Photo taken with a Nikkor 300mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D200 camera. (Date: May 7, 2008)

[Length 9.75 in. Wingspan 24 in.]

This Black Tern was photographed at the Boca Chica beach, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D300 camera. (Date: May 4, 2009)

[Length 9.75 in. Wingspan 24 in.]

This Black Tern in flight was photographed at the Boca Chica beach, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D300 camera. (Date: May 4, 2009)