- ALCEDO
- AOP
- Aux Fringill’idées
- Aviario Caces
- birds.kz
- CARDUELIS++
- Carduelis in Spain
- Bullfinch breeder (ITALY)
- Eurobird and Co Forum
- HAINAUT Forum – BIRDS – POSES
- IL CARDELLINO (Italy) Massimo Natale’s website
- Vincenzo Spano’s Il Cardellino major
- Canaries
- The ‘parva’ Goldfinch
- The Algerian Goldfinch
- John QUATRO’s website (Australia)
- Loxia
- Red Eye
- Francis BENAETS’s website
- Greek website on goldfinch breeding
- Spinus
- The BirdHouse
- Trevor Hardaker’s website
- www.netfugl.dk