Sandwich Tern
scientific name: 
Thalasseus sandvicensis

Light-green/lime ring with a black three alpha-numeric code and metal ring (on other tarsus).

note 1 : Always letter 'N' on first position; followed by one letter and one numeric (e.g. NV2 or N2V); or one numeric and one numeric (e.g. N12); or one letter and one letter (e.g. NVT)

note 2 : a joint project of the Research Institute for Nature and Forest/INBO, Bureau Waardenburg and Ringgroup Delta. This project will run for at least one more year but reports will be replied to after this time as well.

note 3 : we use colour-rings  in order to gain information on migration, habitat use, juvenile dispersal, age of return and recruitment to the breeding colonies in the southwest of The Netherlands or beyond.

note 4 : used letters are : A, C, F, H, K, L, N, P, R, S, T, V, X, Z.

note 5 : IMPORTANT: Lime rings were used in 2014, in 2020 many lime rings show signs of wear. The colour of the ring fades to white, and the coding becomes ‘fat’. 

note 6 :

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Light Green (Lime) [L]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
The Netherlands.
First letter/number (of the c-ring):