Terns

species:

Black Tern

scientific name:

Chlidonias niger

notes:

Black flag with a white two alpha code.

note 1 : this project starts in 2016 in North Rhine-Westfalia, Gemany.

note 2 :

email sighting submit:

colour-ring type:

Flag : one, coded.

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

Black (Niger) [N]

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

Two alpha code (2 letters).

countries where ringed:

Germany.