Greylag Goose

Yellow neckband with a black four alpha-numeric code, starting letter "X" followed by three numbers.

note 1 : from 2024 the following codes are used : X125-X620. 

Blue ring with white 3 alpha-numeric and Helgoland-metal ring (on other leg).

note 1 : geese are ringed in Hamburg and Schleswig-Holstein.

note 2 : used codes from  2002 till 2025: 000 - 999, 00A - 99A, 00B - 99B, 00C - 99C, 00M - 99M, 00R - 99R, 00V - 99V, 0C0 - 0C9, 0E0 - 0E9, 0H0 - 5H9, 0J0 - 0J9, 0K0 - 5K9, 0L0 - 0L9, 0P0 - 9P9, 0S0 - 0S9, 0T0 - 9T9, 0U0 - 9U9, 1A0 - 9A9, N00 - N99, R00 - R99, X00 - X49, RE0 - RE9, RAA - RZZ

note 3 :

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 :

Yellow ring with black four alpha-numeric code : first letter "S" followed by three numbers.

note 1 : 

Yellow neckband with a black four-alpha code, first letter „P” followed by three letters.

note 1 : 

Yellow neckband with a black four-alphanumeric code, first letter „P” followed by three numbers.

note 1 : 

White neckband with a black code : starting letter "A" with  two numbers turned 90°.

note 1 : later, as first letter will be used : "B" or "C" or  "E".

note 2 :

Yellow legring with a black four alpha-numeric code, starting letter "S" followed by three numbers (on one leg) and metal ring (on other leg).
and
Yellow neckband with a black four alpha code, starting letter "P" followed by three letters.

note 1 : legrings on the small chicks ; neckband for bigger chicks and moulting adults.

note 2 : used codes are : PAAA, PAAC, ... PZZZ.

note 3 : 

Yellow neckband with a black four alpha code, starting letter "P" followed by three letters.
and
Yellow legring with a black four alpha-numeric code, starting letter "S" followed by three numbers (on one leg) and metal ring (on other leg).

note 1 : legrings on the small chicks ; neckband for bigger chicks and moulting adults.

note 2 : used codes are : PAAA, PAAC, ... PZZZ.

note 3 : 

Blue neckband with a white three alpha-numeric code : starting number "7" followed by two letters.

note 1 :