That is not true
Which? The 'proof'' of being able to free range or that they have only a ten day memory?
That is really good news BB, I am very happy for you! I am still waiting for an IBBS cock to come home. He left with the migrating turkeys last spring, he had had enough of those **** guineas. A fellow I bought two IBBS chicks from last year told me about an imprinted pea he had that left for three years and came back. It had a favorite spot on the porch rail that it roosted on every night and day. When this bird came back it resumed its old habits like it never left. The guy had no idea of where it had been but thought someone had been keeping it penned and fed until it could escape.