Gulls
species:
Black-headed Gull
scientific name:
Chroicocephalus ridibundus
notes:
Dark-blue wingtag with white 2 alpha-numeric code (2 numbers, 2 letters or 1 number and 1 letter).
note 1 : (none starting with letter 'A').
email sighting submit:
colour-ring type:
Wingtag : coded.
colour-ring colour (of the c-ring):
Dark Blue [B]
colour-ring code (of the c-ring):
Two alpha-numeric code (2 letters/numbers).
countries where ringed:
The Netherlands.
