Eurasian Oystercatcher

Combination of 4 c-rings : 2 c-rings and black over yellow (on tibia right).

note 1 : used colours are B=blue, L=lime, O=orange, R=red, Y=yellow, W=white.

note 2: used are four ring combinations (2 rings/leg) on tarsus and received from WSG black over yellow on right tibia (NY//).

note 3: the project started during March '98 at Alftanes (64°05'N,22°00'W) and about 250 birds have been ringed.

Green ring with a white four-alpha numeric code, starting letter 'T'.

note 1 :

White ring with a black 4 alpha code (starting letters "EA") (on left tibia) and metal ring (on right tibia).

note 1 : used letters are : A , E , H , J , K , L , M , N , P , R , S , T , U , V , X.

Combination of :
* metal ring (on left tibia).
* white ring with black 1 alpha code (on left tarsus).
* green flag (on right tibia) or since 2022 black flag.
* combination of 2 rings (on right tarsus). 

note 1 : bird sringed on the island of Chausey, Normandy, France.

note 2 : used colours in the combination are : black, white, yellow, green, red, blue.

note 3 : details of the project, 2011-2015.
Left tarsus upper : 1 c-ring : W with a 1 digit code.
Right tibia upper : 1 flag (with or without code) : G
Right tarsus upper : 1 c-ring : N-B-G-R-W-Y.
Right tarsus middle :  c-ring : N-B-G-P-R-W-Y.

note 4 : details of the project, since 2016.
Left tibia upper: metal ring.
Right tibia upper: 1 green flag (without code)
Left tarsus upper: 1 c-ring : N, W, Y, G, R
Left tarsus middle: 1 c-ring : N, W, Y, G, R
Left tarsus down : 1 c-ring : N, W, Y, G, R
Right tarsus : 1 c-ring : N, W, Y, G, R

note 5 : In Normandie since 2022 :
Combination of :
* three c-rings (on left tarsus).
* one c-ring (on right tarsus).
* black flag (on right tibia).
* metal ring (on left tibia).

note 6 : see also https://cr-birding.org/node/6224

note 7 :