White ring with a black three alpha-numeric code, starting letter "E" (on left leg) and metal ring (on right leg).
note 1 :
Orange ring with a black two alpha code (on right leg) and metal ring (on left leg).
note 1 : codes used: AA-HZ.
note 2 : birds ringed in county Hampshire, UK.
note 3 :
Orange ring with a black two numeric code (on left leg) and metal ring (on right leg).
note 1 : birds ringed in county Northumberland, UK.
Orange ring with a black two alpha code (on left leg) and metal ring (on right leg).
White ring with a black 3 alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 : codes used : 3/letter/letter and 3/letter/number.
note 2 : birds ringed in county Derbyshire, UK.
note 3 : used codes are : : 3AA - 3IK.
note 4 :
Red ring with a white 3 alpha-numeric code (on left leg) and metal ring (on right leg).
note 1 : codes used: R00-R99.
note 2 : birds ringed in county Oxfordshire, UK.
Combination of : * one c-ring (on left tarsus). * metal ring (on right tarsus).
note 1 : changing colour each year : 2020 = yellow ;
note 2 :
Black ring with a white 3 numeric code (on right leg) and metal ring (on left leg).
note 1 : used codes: 000-099, 100-199, 200-299, 300-399.
note 2 : birds ringed in Highland Region, Scotland.
Dark-blue ring with a white 3 numeric code (on one leg) and metal ring (on other leg).
note 1 : 001 to 999.
note 2 : birds ringed in Northern Germany.
Light-green ring with a black 3 alpha code (on left leg) and metal ring (on right leg).
note 1 : used codes are : A or B or C or D or F or H/ letter / letter.
note 2 : birds ringed in county Kent, UK.