Dark-Blue ring with a white 2 alpha-numeric code (on right leg) and metal ring (on left leg).
note 1 : birds ringed in the UK, counties Kent and Sussex.
Yellow ring with a black two alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 : birds ringed in the UK, east Leicestershire.
Red ring with a white three alpha-numeric code (letter/number/number) (on right leg) and metal ring (on left leg).
note 1 : used letters/numbers are : A,B,C,D,F,H,I,J,K,L,N,P,S,T,V,X,Z,3,4,6,7,9.
