Gulls.

species:

Herring Gull

scientific name:

Larus argentatus

notes:

Yellow ring with a black four alpha-numeric code [starting letter 'Y' followed by a colon ':' and three numbers] (on left tarsus) and metal ring (on right tarsus).

note 1 : used codes are Y:001-Y:999.

note 2 : in a second stadium codes like Y:A01-Y:A99 will be used.

note 3 : used letters are : A, B, C, D, F, G, H, J, K, L, M, P, S, T, V, X, Z.

note 4 : birds ringed in York, see site-marker : 'Y'.

note 5

email sighting submit:

colour-ring type:

Legring : one, coded.

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

Yellow [Y]

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

Four alpha-numeric code (4 letters/numbers).

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

Tarsus left.

countries where ringed:

United Kingdom.

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