Terns

species: 
Common Tern
scientific name: 
Sterna hirundo
notes: 

White ring with a black three alpa-numeric code, starting letter "H", followed by a dot "." a letter and a number.

note 1 : used letters and numbers are : A, E, F, H, J, L, N, P, R, S, T, V, X, Z and 0 till 9.

note 2 :

website sighting submit: 
European colour-ring Birding submit
email sighting submit: 
website information: 
Vogelringstation De Haar
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
White [W]
countries where ringed: 
The Netherlands.
First letter/number (of the c-ring): 
H