Raptors

species: 
Common Buzzard
scientific name: 
Buteo buteo
notes: 

White wingtag with a black four alpha-numeric code, start with the letters "BR" (to denote "Aeropuerto Adolfo Suárez Madrid-Barajas") and two alpha-numeric digits.

note 1 : used letters are A, C, E, F, G, H, J, K, L, M, N, O, P, R, S, T, U, V, W,  X, Y and Z.

note 2 : used numbers are 0 - 9.

note 3 : birds ringed since 2017

note 4 : pvc on the leg too.

note 5 :

email sighting submit: 
colour-ring type: 
Wingtag : coded.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Four alpha-numeric code (4 letters/numbers).
countries where ringed: 
Spain.
First letter/number (of the c-ring): 
BR