Gulls
species:
Black-headed Gull
scientific name:
Chroicocephalus ridibundus
notes:
Yellow ring with a black four alpha-numeric code, starting letter 'Z'.
note 1 : birds ringed from 2012 onwards.
email sighting submit:
email sighting submit (2):
colour-ring type:
Legring : one, coded.
colour-ring colour (of the c-ring):
Yellow [Y]
colour-ring code (of the c-ring):
Four alpha-numeric code (4 letters/numbers).
countries where ringed:
Slovak Republic.
First letter/number (of the c-ring):
Z
