Yellow ring with a black 3 alpha code (on left leg) and metal ring (on right leg).
note 1 : first digit : A or B.
note 2 : birds ringed in county Buckinghamshire, UK.
note 3 :
Blue ring with a white two alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 : birds ringed in county Northumberland, UK.
Red ring with a white two alpha-numeric code (on left leg) and metal ring (on right leg).
Orange ring with a black two alpha-numeric code (on left leg) and metal ring (on right leg).
Dark-green ring with a white 3 alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 : first digit is : A, B, C, D, F, H, J or Z.
note 2 : birds ringed in county Lincolnshire, UK.
White ring with a black two alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 : birds ringed in the Tayside Region, UK.
Light-green ring with a black two alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 : birds ringed in county Essex, UK.
Yellow ring with a black two alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 :