Greylag Goose

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 : 

White neckband with a black three alpha-numeric code : starting letter 'S' followed by two numbers.

note 1 : notice the position of the code.

note 2 : neckband is fitted with a solar-panel / emitter.

note 3 :  

Dark-green legring with a white three alpha code.

note 1 : series used are F,G,H,J,K,L,M,N,P,R,S,T,U,V,Y,Z all in combination with 00-99 or AA-ZZ. The last two numbers of letters are placed under 90 degrees with the first letter. Combinations are reported with first the letter and then the two letters under 90 degrees, so for instance F00.

note 2 : since 1999 legrings with same colour and code as neckrings are used.

note 3 : in total (01.09.2017) there have been neck/leg ringed about 5.500 birds.

note 4: In the two letter series under 90 degrees D, F, I, M, O, Q, V and W were never used.

note 5 : 

Red ring with a white 3 alpha code.

note 1 :