Dr. James F. Clements updates checklist of Birds of the World
Downloadable Clements Checklist
International Clubs; C.O.M
| Confédération Ornithologique Mondiale |
National Clubs; The Netherlands/Nederland/Pays-Bas
| N.B.v.V. |
| Speciaalclub Europese Cultuurvogels (SEC) |
| Belangenbehartiging Europese Cultuurvogel (BEC) |
National Clubs; Belgium/België/Belgique
| A.O.B. |
| K.B.O.F. |
| BNEC |
National Clubs; Germany/Duitsland/Allemagne
| A.Z. |
| DKB |
Private websites
| Girlitz.de |
| Eleveur de Carduelines |
National & International Clubs
| Internationaler Cardueliden Club e.V |
| Amicale des Eleveurs de Passereaux |
Sponsors website European Society of Serinus Breeders
