I bred my 5 yr old albino girl for the first time earlier this year. She was 1300 gms and laid 5 eggs. I recently bred my 3 yr old pied who was 1600 gms and she laid 5 eggs as well. I think they need the weight and the age to be safe. And it is quite a few factors that come into play to be completely successful. Personally, I would wait for both weight and age. At the least 2.5 yrs old. Good luck and take your time.