Terns

species: 
Common Tern
scientific name: 
Sterna hirundo
notes: 

Black ring with a white three alpha-numeric code.

note 1 : letter 'N' on the first position

note 2 : the letter N is followed by one letter and one number (eg. NV2 or N2V), by two numbers (eg. N42), starting with two numbers (eg.01N) or in the number-N-number (eg.7N8)

note 3 : used letters are : A, C, F, H, K, L, N, P, R, S, T, V, X, Z. Used numbers are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

note 4 : we use colour-rings to gain information on habitat use, juvenile dispersal, age of return and recruitment to the breeding colonies in the southwest of The Netherlands or beyond.

colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Black (Niger) [N]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
The Netherlands.
First letter/number (of the c-ring): 
N