Black-headed Gull
scientific name: 
Chroicocephalus ridibundus
EURING code: 

Red ring with a white two alpha-numeric code.

note 1 : old red rings are turning pink.

note 2: a "." sign is to be read within the codes.

note 2 : code used is lettter/number (A2-Z9) and number/letter (1A-9Z). 

note 3 : some 850 red rings will be used from 2004 until 2010.

note 4 : all birds ringed during winter in city-parks.

note 5 : all rings have to be read from bottom to top.

email sighting submit: 
snailmail sighting submit: 
Frank Majoor, Akkerstaat 55, 6822 AJ Arnhem, The Netherlands.
colour-ring type: 
Legring : one, coded.
colour-ring colour: 
Red [R]
colour-ring code: 
Two alpha-numeric code (2 letters/numbers).
colour-ring position: 
Tarsus left.
countries where ringed: 
The Netherlands.