finnfur
Songster
Welcome, AshlieneevelBob Blosi (aka Blosl) made some excellent posts on this topic in the original Heritage Large Fowl thread. I thought I had saved some of those line breeding posts for future reference, but they have gone missing. If I find them I will re-post it here.
THIS IS THE LINK TO THE OLD THREAD OF BOB S [ RIP ]
https://www.backyardchickens.com/t/400344/bob-blosls-heritage-large-fowl-thread
Lots of great info there