Great Egret

White ring with a black three alpha-numeric code and a bar after the first alpha-numeric code.

note 1 : used letters are A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 2 : used numbers are 0 - 9.

note 3 : birds ringed since 2017.

note 4 : PVC ring on left tibia.

note 5: eg. A|3R

White ring with a black three numeric code and a bar after the first numeric code.

note 1 : used numbers are 0 - 9.

note 2 : birds ringed since 2017.

note 3 : PVC ring on left tibia.

note 4 : eg. 1|23

White ring with a black four alpha code (starting letter 'K' followed by three letters) (on tibia right).

note 1 : used codes : KAAA-KZZZ.

note 2 : birds ringed during 2017 or later.

note 3 :

White ring with a black three alpha code (starting letter 'K' followed by three letters) 

note 1 : used codes in 2016 are KAA-KZZ.
c-ring on right tibia / metal ring on left tarsus in 2015 and 2016.

note 2 : used codes in 2017 are KAA-KAZ ; KCA-KCZ ; KZK-KZZ ;
c-ring on left tibia / metal ring on right tarsus in 2017.

note 3 : 

Yellow ring with a black three alpha code (starting letter 'K' followed by letters (on tibia right).

note 1 : during 2016, birds will be ringed : KAA-KZZ.

note 2 : rings turned yellow, but are in fact white !! ...
see http://www.cr-birding.org/node/3543

note 3 :

White ring with a black two alpha code (same ring/code on both tibia) and metal ring.

note 1 :

Red ring with a white three alpha code (on left tibia) and metal ring (on right tarsus).

note 1 : project began in 2016 and is ongoing

note 2 : used letters are A, B, C, D, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 3 :

White ring with a black two alpha-numeric code (same ring/code on both tibia) and metal ring.

note 1 : used codes is letter/number OR number/letter.

note 2 : the code is superposed : letter/number above the other one.

note 3 : birds ringed from 2016 onwards in the Krammersche Slikken, The Netherlands. 

note 4 : 

Yellow ring with a black two numeric code (on left tibia) and metal ring (on right leg).

note 1 : used numbers are : 0 - 9.

note 2 : birds ringed since 2011.

note 3 : another project with a yellow ring is very ‘close’.

note 4 :

Yellow ring with a black two alpha code (on left tibia) and metal ring (on right leg).

note 1 : used letters are: A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 2 : birds ringed since 2011.

note 3 :