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

Dark-blue ring with a white two alpha-numeric code (on left leg).

note 1 : code used is number/letter (1A-9Z) and letter/number (A1-Z9).

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

note 3 : some 850 birds are ringed from 2000 until 2003. Most of these rings are fallen off.

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: 
Blue (Dark) [B]
colour-ring code: 
Two alpha-numeric code (2 letters/numbers).
colour-ring position: 
Tarsus left.
countries where ringed: 
The Netherlands.