Gulls

species: 
Herring Gull
scientific name: 
Larus argentatus
notes: 

Yellow ring with a black four alpha-numeric code.

note 1 : used codes, for example X578 or X29E.

note 2 : it is not possible to identify the ringed small chicks exactly, additional photos by observers are welcome. In most cases the gulls are Caspian Gulls or Herring Gulls, but note the existence of many hybrids. The participation of some Yellowlegged and Lesser Black-backed Gulls is also possible.

note 3 : 

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