Gulls

species:

Black-headed Gull

scientific name:

Chroicocephalus ridibundus

notes:

Yellow ring with a black four alpha-numeric code (first letter "A" followed by two letters and one number).

note 1 : used codes are during 2001: AAA0-AAP9.

note 2 : used codes during 2002-2004 : AAR0-ACP7.

note 3 : used codes during 2005-2011: ACP8-AEH1.

note 4 : further codes used.

note 5 :

email sighting submit:

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:

Germany.

Images:

First letter/number (of the c-ring):