Gulls

species:

Black-headed Gull

scientific name:

Chroicocephalus ridibundus

notes:

White ring with a black four alpha-numeric code : starting letter "T" followed by a black three alpha-numeric code.

note 1 : used codes are : T000-T999, TA00-TA99, T00A-T99A, TE00-TE99, TN00-TN99, T00N-T99N, TS00-TS99, TV00-TV99, TX00-TX99.

note 2 : birds were ringed in Central, SW, N and NW Poland.

note 3 : all rings are to be read from bottom to top.

note 4 : the letter “T” could be from long distance misread as “1”.

note 5 :

website sighting submit:

email sighting submit:

website information:

colour-ring type:

Legring : one, 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:

Poland.

Images:

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