Northern Wheatear

Combination of c-rings :
* 2 c-ring (on one leg).
* metal ring ring over c-ring (on other leg).

note 1 : birds ringed since 1997 on three locations in the Netherlands.

note 2 : used colours are : grey, purple/mauve, pink, light-green/lime, dark-green, dark-blue, brown/umber, orange, white, black, yellow, red.

note 3 :    

Combination of :
* one black ring with a white alpha code (letter 'X') , a metal ring and 2 c-rings.

note 1 : the black ring is the marker of the project.

note 2 : the aim of the study is a a stop-over migration behaviour.

note 3 :

Black ring with a white two alpha-numeric code (on left tarsus) and metal ring (on right tarsus).

note 1 : used letters are A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 2 : used numbers are 0 - 9.

note 3 : birds ringed since 2016.

note 4 :

Black ring with a white two numeric code (on left tarsus) and metal ring (on right tarsus).

note 1 : used numbers are : 0 - 9.

note 2 : birds ringed since 2016.

note 3 :

Black ring with a white two alpha code (on left tarsus) and metal ring (on right tarsus).

note 1 : used letters are: A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 2 : birds ringed since 2016.

note 3 :

Combination of 3 or 4 c-rings and the metal ring (left or right leg) [1].
Combination of 4 c-rings and the metal ring (left or right leg) [2].

[1]
note 1 : 2 or 3 d-rings on each leg.

note 2 : the used colours are white, red, orange, yellow, green and dark-blue.

note 3 : in 1998-2002 a total of 1812 birds were marked individually on Helgoland, Germany.

note 4 : a similar project is run in Iceland, Fair Isle and Gibraltar.

[2]
note 1 : the metal ring is anodized in red.

note 2 : the used colours are white, yellow, orange, red, dark-green, dark-blue and black.

note 3 : one colour ring is above the metal ring.

note 4 :

Combination of two rings (on one leg) and one ring (usually above) a metal ring.

note 1 : metal ring can be on right or left leg, but always below c-ring.

note 2 : used colours are :
(1) single colours : light blue, dark blue, dark green, yellow, pink, orange, red, white.

(2) two-coloured (broad striped) : dark blue-white, red-white, dark green-light blue, orange-light blue, pink-black, yellow-black, red-dark blue.

(3) two-coloured (narrow striped "zebra"): black-white, red-white, pink-black.

note 3 : ongoing long-term population project close to Uppsala (Sweden). Since 1993 we ring annually about 50 adults and 300-400 nestlings during the breeding season.

note 4 :
http://www.slu.se/en/departments/ecology/personal-webbpages/part-tomas/
http://www.slu.se/en/departments/ecology/personal-webbpages/arlt-debora/

Combination of c-rings :
* metal ring over striped c-ring (orange or white) (on right tarsus).
* 1 c-ring OR a combination of 2 or 3 c-rings.

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

note 2 :   

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

note 1 : used codes are letter / number / letter.

note 2 :

Yellow ring with a black three alpha code.

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

note 2 :