Sandwich Tern

Orange ring with a black three alpha code :
* letter 'V' followed by two letters (on left or right tarsus) and metal ring (on opposite tarsus).

note 1 : used codes 2016-2018 for ad. and pulli are VAA-VZZ.

note 2 : 

Green ring with a white three alpha-numeric code, starting letter 'K'  (on one leg) and metal ring (on other leg).

note 1 : used codes are : K0A-K9Z.

note 2 : birds ringed in Ireland.

note 3 : 

White ring with a black three alpha-numeric code, starting letter 'K' (on one leg) and metal ring (on other leg).

note 1 : used codes are : K0A-K9Z.

note 2 : birds ringed in Ireland.

note 3 : 

White ring with a black three alpha-numeric code, starting lettr 'E' followed by two numbers (on one leg) and metal ring (on other leg).

note 1 : used codes are : E00-E99.

note 2 : birds ringed in Clyde, Scotland, by Clyde Ringing Group.

note 3 : 

Light-green ring with a black three alpha code, starting letter 'E' (on one leg) and metal ring (on other leg).

note 1 : used letters : A, B, C, D, F, H, J, K, L, N, P, S, T, V, Z.

note 2 : birds ringed in north-east Scotland by Grampian Ringing Group.

note 3 : 

Red ring with a white three alpha code, beginning letter 'K' (on one leg) and metal ring (on other leg).

note 1 : during 2013 - 2020  182 full-grown, autumn passage, birds were ringed at Ynyslas National Nature Reserve, Wales.

note 2 : used codes are K/ letter/letter. From 2021 will also include K/number/letter and K/letter/number

note 3 :

Yellow ring with a black three alpha code (on one leg) and metal ring (on other leg).

note 1 : used codes are : YAA-YBF, YBH-YJZ, YKA-YPF,

note 2 :

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

note 1 : used codes are : P00-P99.

note 2 :

White ring with a black 3 alpha code, starting letter 'U'.

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

note 2 : nestling Sandwich Terns have been ringed on the Farne Islands or Coquet Island, Northumberland, England,  by the Natural History Society of Northumbria and the National Trust and we are very grateful for any sightings.

note 3 :

Yellow ring with a black 3 alpha code, starting letter 'U'.

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

note 2 : nestling Sandwich Terns have been ringed on the Farne Islands or Coquet Island, Northumberland, England,  by the Natural History Society of Northumbria and the National Trust and we are very grateful for any sightings.

note 3 :