In this auction we have the offer of 100% Gerard Koopman birds.  - All offered birds have original Koopman birds as parent

In this auction there is the offer of grandchildren of famous Gerard Koopman birds such as "Nationaal Pogacar", "Sifan", "Jaira", "Coby", "Manu", "Fedor", "Weston", Zoran", "Wandie", "Albina", "Johen", "Thaisa" and so on