Gulls

species:

Black-headed Gull

scientific name:

Chroicocephalus ridibundus

notes:

Dark-blue ring with a three alpha OR three numeric code.

note 1 :

email sighting submit:

colour-ring type:

Legring : one, coded.

colour-ring colour (of the c-ring):

Dark Blue [B]

colour-ring code (of the c-ring):

Three alpha-numeric code (3 letters/numbers).

countries where ringed:

Denmark.