Report a bird

Listed below are all the species and colour-marks used for each study. Please check that the ring you are reporting matches one from our studies.

Can’t find the colour-mark in the list below? Check the European Colour-ring Birding website to find other projects to contact.

other colour-marks

Barnacle Goose

Blue leg ring, 3 white characters (letter, number, number) on one leg with BTO metal on other leg. Some birds may have a colour ring above or below the metal

Yellow leg ring, 3 black characters (letter, number, number) on one leg with BTO metal on other leg.

White neck collar, 3 black characters (letter, number, number). BTO metal ring on a leg

Black-headed Gull

Blue leg ring, 4 white characters (2, letter, number, number) on one leg with BTO metal on other leg

Blue leg ring, 4 white characters (2, number, number, letter) on one leg with BTO metal on other leg

Canada Goose

Red leg ring, 4 white characters (all letters) on one leg with BTO metal on other leg

Coot

White leg ring, 3 black characters (letters or numbers) on one leg with BTO metal on other leg

Curlew

White flag (combination of two numbers) above blue ring on right tibia with BTO metal on tarsus. Blue leg ring on left tibia

Greylag Goose

White leg ring, 3 black characters (combination of letters and numbers) on one leg with BTO metal on other leg.

Lime leg ring, 3 black characters (all letters) on one leg with BTO metal on other leg.

Orange neck collar, 3 black characters (all letters). BTO metal ring on a leg

Moorhen

Orange leg ring, 3 black characters (letters or numbers) on one leg with BTO metal on other leg

Pink-footed Goose

Grey neck collar, 3 black characters (all letters, combinations start either XH, XJ or XU with third letter between A-Z) and BTO metal on leg

Shelduck

Blue leg ring, 2 yellow characters (combination of letters and numbers) on one leg with BTO metal on other leg

Lime leg ring, 2 black characters (combination of letters and numbers) on one leg with BTO metal on other leg

Whooper Swan

White leg ring, 3 black characters (number, number, letter) on one leg with a metal on other leg (Note: not always BTO metal as some birds ringed in Iceland).

White leg ring, 3 black characters (all letters) on one leg with a metal on other leg (Note: not always BTO metal as some birds ringed in Iceland).

Wigeon

Blue leg rings, two yellow characters (combination of letters or numbers) on one leg, BTO metal on other leg.
(Note: some rings have a vertical bar between the characters)

Green leg rings, two white characters (combination of letters or numbers) on one leg, BTO metal on other leg.
(Note: some rings have a vertical bar between the characters)