Gulls

species:

Black-headed Gull

scientific name:

Chroicocephalus ridibundus

notes:

White wingtag with a black two alpha-numeric code.

note 1 : white wingtag has 2 letters/numbers.

note 2: between 1992 and 1995 1063 birds have been wingtagged (783 white, 265 yellow and 15 blue).

note 3: no more birds have been tagged since winter 1994/95.

email sighting submit:

colour-ring type:

Wingtag : coded.

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

White [W]

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

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

countries where ringed:

Spain.