Caspian Tern

Black ring (on left leg) with a white code KJnn : n is number. No metal ring.

note 1: birds are ringed in Russian Karelia.

Combination of c-rings.

note 1 :

Yellow ring with a black 3-digit code.

note 1 : used letters are : A, B, C, D, F, H, J, K, L, N, P, S, T, V, Z.

note 2 : used codes are AAA-AZZ and BAA-BZZ.

note 3 : the ringer is Adriano Talamelli and birds are ringed Salina di Commachio, Italy.

note 5 : for marking scheme info. , please refer to : stefano.volponi@isprambiente.it

note 6 :

Dark-blue ring with a white three alpha-numeric (letter/number/number or letter/number/letter where "S" is the first letter.

note 1 :  blue ring with code on one tarsus, metal on other.

note 2 : approximately 200 birds were marked 2018-2023.

note 3 : birds are ringed at Ume River Delta, Sweden (63º45´N 20º18´E)

note 4 :

Red ring with white a 3 alpha code.

note 1 : first letter is : A, C, F, H, J, K, L, M, N, R, T, U, Y.

note 2 :  53 birds ringed in 2011, 215 in 2012, 469 in 2013.

note 3 :