Geese

species: 
Greylag Goose
scientific name: 
Anser anser
notes: 

White neckband with a black three alpha-numeric code : letter and two numbers 90° rotated.

note 1 : starting letter X , with codes X00 till X30 used for GPS-transmitter.  

note 2 : the GPS-neckrings X16, X17 and X18 are light grey coloured.

note 3 :

email sighting submit: 
colour-ring type: 
Neckband.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Austria.
First letter/number (of the c-ring): 
X