Terns

species: 
Black Tern
scientific name: 
Chlidonias niger
notes: 

Dark-green ring with a black two alpha-numeric code (on left tarsus) and metal ring (on right leg).

note 1 : used codes are : as numerics 0-9 and as letters A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 2 : birds ringed since 2021.

note 3 :

website sighting submit: 
Oficina de Anillamiento
email sighting submit: 
website information: 
Oficina de Anillamiento
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Dark Green [G]
colour-ring code (of the c-ring): 
Two alpha-numeric code (2 letters/numbers).
countries where ringed: 
Spain.