Caspian Gull
scientific name: 
Larus cachinnans

Yellow ring with a black four alpha-numeric code, starting letter 'H'.

note 1 : some rings of these codes are used in Schleswig Holstein, Germany for other great Gull species like Herring Gulls.

note 2 : rings are to be read from bottom to top, most rings have a “checkpoint”. We even used rings with 5 characters like HC234, HCE56.

note 3: some birds are ringed with red rings white inscription with combinations like H234, H4A4 etc.

note 4 :

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