Terns

species: 
Common Tern
scientific name: 
Sterna hirundo
notes: 

Yellow ring with a black three alpha code.

note 1 : always letter 'N' or 'H' on the first position.

note 2 : the letter N or H is followed by two letters (eg. NVN or NNV). 

note 3 : used letters are : A, C, F, H, K, L, N, P, R, S, T, V, X, Z.

note 4 : these codes were used in 2017-2018 on both adult and juvenile birds during the breeding season in the southwest of the Netherlands.

note 5 : a joint project of the Research Institute for Nature and Forest (INBO), Bureau Waardenburg and Ringgroup Delta.

note 6 : we use colour-rings in order 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.

note 7 :

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): 
Three alpha code (3 letters).
countries where ringed: 
The Netherlands.
First letter/number (of the c-ring): 
N or H