Gulls

species:

Yellow-legged Gull

scientific name:

Larus michahellis

notes:

Yellow ring with a 2 alpha-numeric code code.

note 1 : rings are placed above the knee (on the tibia) for better observation results in the colony (high vegetation) and on rubbish-dumps. All other colours (with vertical placed codes) above the knee are also part of this project.

note 2 : In some series used dots (1.A), colons (1:A) or single or double bars (1|A or 1||A). Those additional marks are part of the code

note 3 : In some series is an additional plain marker present at the other tibia, this marker is part of the combination.

note 4 : Same codes can be used by other large gull species. If you have doubts about the species and/or code, please note the age and position of all the rings, including the metal ring.

note 5 : used letters/numers are : A, B, C, D, E, F, G, H, J, K, L, M, N, P, R, S, T, U, V, W, X, Y, Z, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + and =. Only the letters I, O and Q are never used

note 6 : In this project are also used a combination of two coloured rings with both one letter or number at each tibia.

email sighting submit:

website information:

Gull Research

colour-ring type:

Legring : one, coded.

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

Yellow [Y]

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

Two alpha-numeric code (2 letters/numbers).

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

Tibia

countries where ringed:

The Netherlands.