Caspian Gull
scientific name: 
Larus cachinnans

Yellow ring with a black 4 alpha code (first letter “P”).

note 1 : used letters are A, B, C, D, E, H, K, L, N, P, S, T, U, V, X, Z.
P always as first letter.

note 2 : codes are used in C and E Europe (Poland, Ukraine, Russia) for L. argentatus, L. cachinnans, L. michahellis, L. fuscus heuglini (probably also L. [f./c.] barabensis) and hybrids. Russian and some Polish birds frequently are left unidentified during ringing, due to difficulties of assigning to species in mixed colonies.

note 3 : birds are ringed by a large team, coordinated by Grzegorz Neubauer, Ornithological Station, Museum and Institute of Zoology, Polish Academy of Sciences, Nadwislańska 108, 80-680 Gdansk, Poland.

note 4 : 

colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Yellow [Y]
colour-ring code (of the c-ring): 
Four alpha code (4 letters).
countries where ringed: 
Poland and Russia and Ukraine.
First letter/number (of the c-ring):