Common Tern

Yellow ring with a black two alpha code.

note 1 : used codes are : AA-EZ.

note 2 :

Yellow flag with a black three numeric code (on right tarsus) and metal ring (on left tarsus).

note 1 : used codes 100-299 (100 - 139 in 2024).

note 2 : Common Terns, caught on nest and ringed as adult breeders in Neufelderkoog (Germany) during avian influenza antibody monitoring.

note 3 : project running time : 2024 - 2028.

note 4 :

Red ring with a white three alpha code.

note 1 :

Dark-blue ring with a white three alpha-numeric code, starting letter 'L or H' (on one leg) and metal ring (on other leg).

note 1 : L0A-L9Z and LA0-LZ9.

note 2 :

Dark-green ring with a white 3 numeric code.

note 1 : used codes are 600-699, with a ‘dot’ after the number six (e.g. 6.01).

note 2 : birds ringed at Lough Atalia in Galway City, Lough Ree in counties Longford/Roscommon/Westmeath and other sites in the midlands and west of Ireland.

note 3 :

Red legring with a white three alpha code (on tarsus left) and metal ring (on tarsus right).

note 1 : to be read from bottom till top.

note 2 : project started in 2024.

note 3 :

Orange ring with a black three numeric code (700 - 799) (on left leg) and metal ring (on right leg).

note 1 : birds ringed in Cork, Ireland.

note 2 :

Dark-blue ring with a white thre numeric code (700 - 799) (on left leg) and metal ring (on right leg).

note 1 : birds ringed in Cork, Ireland.

note 2 :

Yellow flag with a black three alpha-numeric code.

note 1 : used codes are A00-A99.

note 2 : birds ringed at the lake Constance.

note 3 :   

White flag with a black four alpha-numeric code.

note 1 :