What have we done wrong? We got 3 new PoL chickens yesterday, and introduced them into pen with our 2 existing chickens. Everyone we had asked said they would be OK after 1st night together - but they're not. This morning the 3 new ones were cowering in the nest box and the 2 old ones wouldn't let them out. In the end I let the 2 old ones out of the run so the new ones could at least get as far as feed and water - but that's not sustainable as the old ones can't get back to the house. Urgent advice / valium (for them or for me) needed...please.