Common Blackbird

Combination of c-rings :
* metal ring above 1 c-ring (on right leg).
* 2 c-rings (on left leg).

note 1 : used colours are : purple, yellow, pale blue, dark blue, brown, orange, red, dark green, lime, grey, and white

note 2 : birds ringed in north of Tenerife, Canary Islands, Spain.

note 3 : birds ringed since 2026.

note 4 : 

Combination of :
* three c-ring (on one leg).
* one c-ring (on other leg).

note 1 : the marker ring used one colour each year (dark-green : 2024, ...)

note 2 : project starts in 2024.

note 3 :

Combination of 3 c-rings (on right leg) and yellow/black-striped ring over metal ring (on left leg).

note 1 : birds are ringed for a local project on the Island of Helgoland, DLD.

note 2 : project marker: a yellow-black ring over metal ring on the left leg.

note 3 : used colours for the right leg are : white, orange, red, green, violett, blue, black, pink and yellow.

note 4 : project of the Vogelwarte Helgoland (Institue for Avian research).

note 5 :

Black ring with a white three alpha code, starting letter "A" or "B" or "C" (on left leg) and metal ring (on right leg).

note 1 : birds ringed in West Midlands, UK.

note 2 :

Dark-green ring with a white two alpha code (on left leg) and BTO metal (on right leg).

note 1 : birds ringed in the Republic of Ireland.

note 2 :

Red ring with a white three alpha-numeric code (on left leg) and metal ring (on right leg).

note 1 :
letters used are  A, B, C, D, F, H, J, K, L, N, P, S, T, V, X, Z
numbers used are : 3, 6, 7, 9.

note 2 : birds ringed in south east England.

note 3 :

Orange ring with a black two alpha code (on right leg) and BTO metal ring (on left leg).

note 1: birds ringed Caerphilly, Wales, UK.

note 2 :

Combination of :
- c-ring above metal ring (on left tarsus).
- 2 c-rings (on right tarsus).

note 1 :

Combination of 3 c-rings :
* 2 c-rings (on one tarsus).
* 1 c-ring and metal ring (on other tarsus).

note 1 : used colours are : red, orange, yellow, white, dark-blue, dark-green, black.    

note 2 : birds ringed in the area Alicante and Murcia
 

note 3 : 

Black ring with a white two alpha code (on left leg).

note 1 : birds ringed in West Midlands, UK.

note 2 :