Pied Avocet

Combination of :
* 4 c-rings (2 on each tibia), where a blue c-ring below another c-ring (on left tibia) is the marker.

​note 1 : several ringers participated on the project : for details and direct contact with the ringer, see attachement below. 

note 2 : used colours are black, white, yellow, orange, red, lime/light-green, dark-blue, dark-green and metal ring on right tarsus.

note 3 :

Combination of two c-rings (on left tibia) and metal ring (on left tarsus).

note 1 :

White ring with a black three alpha-numeric code (on left or right tibia) and metal ring (on other tibia). 

note 1 :

Combination of 5 c-rings :
* 3 c-rings (on left tibia)
* 2 c-rings in combination with a metal ring (on right tibia).

note 1 : for the c-rings on left tbia are never two of the same colours above each other.  

note 2 : the metal ring is part of the combination.

note 3 :

Combination of 4 c-rings :
* 1 c-ring over a coded green ring (white letter 'X', or 'O', or 'A' (on left tibia)
* 2 c-rings (on right tibia).

note 1 : on right tibia never two the same colours are used over each other.

note 2 : metal ring on one of the tarsus, but doesn't play a role for identification.

note 3 : 6 different colours are used as c-ring on left tibia.

note 4 : 

Combination of 4 c-rings :
* 1 large green ring with one white line (on left tibia)
* 3 c-rings (on right tibia).

note 1 : on right tibia never two the same colours are used over each other.

note 2 : metal ring on one of the tarsus, but doesn't play a role for identification.

note 3 : 

Combination of 4 c-rings :
* 1 large red ring with two white lines (on left tibia)
* 3 c-rings (on right tibia).

note 1 : on right tibia never two the same colours are used over each other.

note 2 : metal ring on one of the tarsus, but doesn't play a role for identification.

note 3 : 

Combination of 1 flag and 4 c-rings :
* 1 c-ring over 1 light-green or dark green flag (on left tibia)
* 3 c-rings (on right tibia).

note 1 : on right tibia the c-rings are never of the same colour over each other.

note 2 : the metal ring is on one of the tarsus and doesn't play a role into the combination.

note 3 : the c-ring above the flag can be of 6 different colours.

note 4 : 

Combination of 4 c-rings :
* 1 c-ring over a white ring (coded 'X' or 'O') (on left tibia)
* 2 c-rings (on right tibia).

note 1 : the c-ring above the white coded ring can be of 6 different colours.

note 2 : on right tibia the c-rings are never of the same colour over each other.

note 3 : the metal ring is on one of the tarsus and doesn't play a role into the combination.

note 4 : 

Combination of 4 c-rings :
* 1 large yellow ring with two black horizontal lines (on left tibia)
* 3 different c-rings (on right tibia).

note 1 : on right tibia the c-rings are never of the same colour over each other.

note 2 : the metal ring is on one of the tarsus and doesn't play a role into the combination.

note 3 :