Caspian Gull

Green ring with a white 4 alpha code.

note 1 : birds ringed in the Lausitz area, East German inland near Polish border.

note 2 : this is mixed colony where Caspian Gull dominate although hybrids are possible.

note 3 : bird ringed by Heiko Michaelis.

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 : 

White ring with a blue four alpha-numeric code (3 numbers followed by a colon (:) and ending letter "S").

note 1 : birds ringed in Slovakia (ending letter "S").

note 2 : during 2012 60 pulli Larus cachinnans and 1 Larus michahellis were ringed.

note 3 :  72 pulli were ringed in 2013 ; 90 pulli were ringed in 2014 ; 153 pulli were ringed in 2015 ; 77 pulli were ringed in 2016.

note 4 : some of the gulls were accidentally ringed on the left tarsus.

note 5 : photos are welcome as there is a possibility of some mixed pairs (Larus cachinnans x Larus argentatus) situated in one colony.

note 6 :