Gulls

species: 
Slender-billed Gull
scientific name: 
Chroicocephalus genei
notes: 

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

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 2018.

note 3 : generally, PVC ring on left tarsus.

note 4 :

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): 
Red [R]
colour-ring code (of the c-ring): 
Three alpha code (3 letters).
colour-ring position (of the c-ring): 
Tarsus left.
countries where ringed: 
Spain.