Grey Heron

Red ring with a white three alpha-numeric code (1 letter and 2 numbers).

note 1 : used codes are : B + number + number (B00-B99).

note 2 : birds ringed in Staffordshire, UK.

note 3 : 

Orange ring with a black four alpha-numeric code, starting letter "E".

note 1 :

Dark-green ring with a white four alpha code (on left tibia) and metal ring (on right tibia).

note 1 : used letters are : A, C, F, H, K, L, N, P, R, S, T, V, X, Z.

note 2 : later four alpha-numeric code will be used and used numbers are : 1, 2, 3, 4, 5, 6, 7, 8, 9.

note 3 :

Red ring with a white 4 alpha-numeric code, first letter „P” followed by three digits (on the right tibia) and metal ring (on the left tarsus).

note 1 : 

Dark-green ring with a white two alpha code (on right tibia) and metal ring (on left tibia).

note 1 : 

White ring with a black three alpha-numeric code.

note 1 : codes used: A+letter+number; B+letter+number

note 2 : birds ringed at Lee Valley colonies - Netherhall & Walthamstow Wetlands

note 3 : 

Combination of :
* dark-blue ring with a white two alpha-numeric code (on left tibia).
​* orange ring (on right tibia).

note 1 : birds ringed in the UK, Nottinghamshire from 2017.

note 2 : 

Red ring with a white three alpha-numeric code (on one leg) and metal ring (on other leg).

note 1 : used codes are :
​* starting letter "C" / number / number.
​* starting letter "C" / letter / number.

​note 2 :

White ring with a black for alpha-numeric code, starting letter XH followed by two numbers.

note 1 : used codes are XH00-XH99.

note 2 : birds ringed in Belarus since 2019. Number of ringed birds: 2019: 10, 2021: 3, 2022: 33

note 3 :

Yellow ring with a black two alpha-numeric code (on right tibia) and metal ring (on right tarsus).

note 1 : code used : letter/number.

note 2 : birds ringed in the UK, county York.

note 3 :