Yes, that is what I meant. By "breed true" I meant all birds show the trait in every generation. The ones that do not breed true are the ones where some chicks show the trait and some do not, like with blue feathers.Oh, I understand what you mean now! Honestly, I don’t know why, but I was interpreting “cannot breed true” as if the children would never show the trait, and it would skip a generation and show up in the grandchildren or something. I’m not very logically oriented, lol. If I recall, two blue feathered parents can produce some blue feathered chicks, but it’s only a 50% chance, thus you can’t say they “breed true” as it’s not 100% of the time. You taught me this not too long ago