Gulls

species: 
Black-headed Gull
scientific name: 
Chroicocephalus ridibundus
notes: 

Red ring with a white two 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 number/number.

note 3 : all birds ringed during winter in city-parks.

note 4  : all rings have to be read from bottom to top.

email sighting submit: 
website information: 
http://www.frankmajoor.nl
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Red [R]
colour-ring code (of the c-ring): 
Two numeric code (2 numbers).
colour-ring position (of the c-ring): 
Tarsus left.
countries where ringed: 
The Netherlands.