Swans

species: 
Mute Swan
scientific name: 
Cygnus olor
notes: 

Yellow ring with a black two alpha code.

note1 : used codes are AA-ZZ.

note 2 :

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Yellow [Y]
countries where ringed: 
United Kingdom.