Geese

species: 
Barnacle Goose
scientific name: 
Branta leucopsis
notes: 

Black neckband with a white three alpha-numeric code, letter 'C' or 'E' or 'A' or 'D' followed by two numbers.

note 1 : letter D seems to be a '0'.

note 2 : used first letters are : C and E ; D ; A.

note 3 :

colour-ring type: 
Neckband.
colour-ring colour (of the c-ring): 
Black (Niger) [N]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Russia
Lithuania
The Netherlands.