Common Kestrel

Light-green (lime) ring with black 3-alpha code (on left tarsus) and metal ring (VT Arnhem) (on right tarsus)

note 1 : this is a local project (RAS project in “groene hart” area in The Netherlands).

note 2 : nestlings and adult birds are c-ringed in this population.

note 3 : used letters are : A, C, E, H, J, K, L, N, P, S, T, U, X, Y, Z.

note 4 : project starts in 2017.

note 5 : 

Green wingtag with a white three alpha-numeric code : letter 'x' / letter / number. 

note 1 : used codes in 2016 : XF0-XF9.

note 2 :

* Blue ring with a black  three numeric code (on one leg) and metal ring (on other leg).

note 1 : this is a local project (Lebedeva Natalia’ Kestrel Project).

note 2 : nestlings and adult birds are c-ringed in this population.

note 3 : birds from two different habitats are c-ringed (yellow : reed habitat and blue : tree habitat)

note 4 :

* Yellow ring with a black three alpha-numeric code : number/letter/letter (on one leg) and metal ring (on other leg).

note 1 : this is a local project (Lebedeva Natalia’ Kestrel Project).

note 2 : nestlings and adult birds are c-ringed in this population.

note 3 : birds from two different habitats are c-ringed (yellow : reed habitat and blue : tree habitat).

note 4 :

Yellow ring with a black three alpha-numeric code : number-letter-number and

number-letter-letter (on right tarsus) and metal ring (on left tarsus).

note 1 : series used from 2016 onwards.

note 2 : used series form 2022 onwards : 0AA-9ZZ.

note 3 :

Combination of :
* orange ring with a black three alpha code (on one leg) and
* green ring with a white two alpha code ring above the metal ring (on the other leg).

note 1 : most birds are ringed in 2008 - 2009 in Friesland and Groningen, The Netherlands.

note 2 : used letters are : A,C,E,H,J,K,L,N,P,S,T,V,X,Y,Z.

note 3 :

Dark-blue ring with a white three alpha code (on one leg) and metal ring (on other leg).

note 1 : most birds are ringed in 2010-2015 in The Netherlands.

note 2 : used letters are : A, C, E, H, J, K, L, N, P, S, T, V, Y, Z.

​note 3 : used codes are : AAA...AZZ, CAA...CZZ, EAA...EZZ, HAA...HZZ, JAA...JZZ, KAA...KZZ, LAA...LZZ, etc... 

note 4 : most birds are ringed in Friesland and Groningen, a few are ringed near the airport Maastricht-Aachen.

note 5 :

Orange ring with a black three alpha code (on one leg) and metal ring (on other leg).

note 1 : most birds are ringed in 2008 - 2009 in Friesland and Groningen, The Netherlands.

note 2 : used letters are : A,C,E,H,J,K,L,N,P,S,T,V,X,Y,Z.

note 3 : sometimes a green two alpha code ring is added above the metal ring.

note 4 :

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

note 1 : most birds are ringed in 2010-2015 in Friesland and Groningen, The Netherlands.

note 2 : used letters are : A, C, E, H, J, K, L, N, P, S, T, V, X, Y, Z.

note 3 : sometimes a green two alpha code ring is added above the metal ring.

note 4 :

One c-ring (on right leg) and metal ring (on left leg).

note 1 : used colours are : light-blue, yellow, grey, violet, dark-green.   

note 2 : during 2015 23 birds were ringed. 

note 3 :