Top references from across the world e.g. Philippines, China and USA:
Crow / Gouden Grijs bloodline performs outstanding on all distances, especially in hard racing conditions such as hot weather, mountainous environment, etc...

Some references from Belgium:
1. Nat. c. / 14. Nat. Argenton II – 6.377 birds (2019)
30. Nat. c. Argenton I – 1.714 birds (2019)
59. Laon – 1.066 birds (2018)
1. Prov. Tulle 666 birds / 3. Nat. 6.974 birds
1. Nat. hens / 4. Nat. Brive - 19.487 birds
1. Oostende - 384 birds
1. Club Valence 2014
6. Nat. Zone Châteauroux - 1,451 birds 2015
6. Nat. Zone Montauban - 417 birds 2015
7. Nat. Zone La Souterraine - 140 birds 2015
8. Nat. Zone Limoges - 605 birds 2015
Also 27.-31.-32.-35.-42.-52.-64.-73. Int./Nat.

Long distance to Marathon races, KM to our loft