Gulls

species:

Black-headed Gull

scientific name:

Chroicocephalus ridibundus

notes:

White ring with a black four alpha code (starting letter T).

note 1 : >1000 birds ringed since 2010.

note 2 : used letters are : A, C, E, H, J, L, M, N, P, R, T, U, V, W, X, Y.

note 3 : adult breeding birds and pulli arde ringed in colony at Przykona Reservoir (Central Poland, wielkopolskie region). Some birds I have ringed also in breeding colony at Rynskie Lake (NW Poland, warminsko-mazurskie region).

note 4 :

website sighting submit:

Ornithological Station, Museum and Institute of Zoology of the Polish Academy of Sciences

email sighting submit:

colour-ring type:

Legring : one, coded.

colour-ring colour (of the c-ring):

White [W]

colour-ring code (of the c-ring):

Four alpha code (4 letters).

countries where ringed:

Poland.

Images:

First letter/number (of the c-ring):