Little Tern
scientific name: 
Sternula albifrons

Dark-green ring with a white three alpha-numeric code :
starting letter ‘N’ or ‘Y’ or ‘Z’ followed by number and letter
starting letter ‘N’ or ‘Y’ or ‘Z’ followed by two numbers
starting letter ‘N’ or ‘Y’ or ‘Z’ followed by letter and number

note 1 : The NW European Little Tern Project is a multinational cooperation of ringers from the national ringing schemes of Denmark (Zool. Museum, Copenhagen), Germany (Vogelwarte Helgoland and Vogelwarte Hiddensee), the Netherlands (Vogeltrekstation Arnhem) and Africa (South African Bird Ringing Unit, SAFRING), lead and coordinated by Aarhus University, Denmark. The project uses a combination of metal rings from the respective ringing scheme on one tarsus and a dark-green colour-ring on the other tarsus.

note 2 : From 2017 to March 2021 a total of 503 adults and 227 larger chicks have been colour-ringed in various colonies across Denmark, Germany and the Netherlands as well as in the wintering area in Senegal.

note 3 : General position of the colour-ring is left tarsus (birds ringed in Denmark) or right tarsus (birds ringed in Germany, the Netherlands and Senegal). However, foreign ringed Little Terns controlled by this project may have the colour-ring on the opposite tarsus depending on the position of their metal ring.

note 4 :

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Dark Green [G]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
First letter/number (of the c-ring): 
N or Y or Z