Terns

species: 
Black Tern
scientific name: 
Chlidonias niger
notes: 

White ring with a black two alpha code (on left tarsus) and metal ring (on right leg)

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

note 2 : birds ringed since 2010.

note 3 :

website sighting submit: 
Officina de Anillamiento,
email sighting submit: 
website information: 
Oficina de Anillamiento,
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Two alpha code (2 letters).
colour-ring position (of the c-ring): 
Tarsus left.
countries where ringed: 
Spain.