Common Tern

Combination of  c-rings : 4 colours, including a metal ring.

note 1: 1 ring with two colours on either tarsus.

Combination of c-rings.

Combination of 1 colour ring and metal ring (c-ring can be either tarsus).

note 1: birds are ringed at the Starnberger See - colony, Bavaria, Germany ;

- used codes are in 1999-2003 : 1 c-ring on right tarsus and 1 steel ring (Radolfzell) on left tarsus.

- used codes are in 2004-2005 : 1 c-ring on left tarsus and 1 steel ring (Radolfzell) on right tarsus.

note 2: birds are ringed at the Ammersee - colony, Bavaria, Germany.

- used rings are in 2003 : 1 c-ring on right tarsus and 1 steel ring (Radolfzell) on left tarsus.

- used rings are in 2004-2005 : 1 c-ring on left tarsus and 1 steel ring (Radolfzell) on right tarsus.

Combination of 3 c-rings (2 c-rings on left leg).

note 1 : all birds ringed in Britain & Ireland.

note 2 : used colours are : white, yellow, red, light-green, light-blue, dark-blue.

combination of 2 c-rings : 1 c-ring (on right leg) and a black and white striped ringed above the metal ring (on left leg).

note 1 : all birds ringed in Britain & Ireland.

Combination of 2 c-rings : metal below blue ring (on left leg) and 1 c-ring (on right leg).

note 1 : all birds ringed in Britain & Ireland.

note 2 : used colours are : yellow, white, light-blue, light-green.

One colour ring.

note 1 : all birds ringed in Britain & Ireland.

note 2 : used colours are : light-green, white, yellow, light-blue, black, purple, dark-blue, dark-green.

Combination of metal BTO-ring, colour rings and split colour rings (single colour ring with 2 colours one above the other).

note 1 : chicks are ringed on the tern rafts at Little Marlow Gravel Pits, Buckinghamshire, UK.

note 2 : Break down of ringed birds:

2002, LMGP Bucks, 16 ringed, Left: split dark green over yellow, Right: metal

2003, LMGP Bucks, 18 ringed, Left: split red over yellow, Right: metal

2004, LMGP Bucks, 16 ringed, Left: split light blue over yellow, Right: metal

2005, LMGP Bucks, 11 ringed, Left: split orange over yellow, Right: metal

2005, Willington, Beds, Left: Yellow, Right: metal

2005, Willington, Beds, Left: White, Right: metal

2006, LMGP Bucks, 15 ringed, Left: split black over yellow, Right: metal

2006, Willington, Beds, Left: split white over black, Right: metal

2007, LMGP Bucks, 12 ringed, Left: metal, Right: split dark green over yellow

2007 Willington, Beds, Left: split light blue over black, Right: metal

2008, LMGP Bucks, Left: metal, Right: split red over yellow

2008, Calvert Lakes, Beds, Left: metal, Right: split light blue over orange

2008, Wilstone/ College Lake, Left: metal, Right: split light blue over red

Yellow plastic-ring (on right tarsus) and metal ring (on left tarsus).

note 1 : all birds are ringed in Southern Poland, mostly the Upper Vistula River Valley

note 2 : during 2006 only chicks were ringed

Orange c-ring (on right tarsus) and metal ring (on left tarsus).

note 1 : all birds are ringed in Southern Poland, mostly the Upper Vistula River Valley.

note 2 : during 2005 only chicks were ringed.