Very unusual inland, Ian, though there have been inland breeding records in Ceredigion over the years. Rather than me witterng on about a subject of which I know little, there is some interesting information in Birds of Ceredigion, Hywel Roderick and Peter Davies 2010. and Birds of Wales, Adar Cymru,Pritchard, R et al 2021.
Everybody with an interest in birds in Ceredigion should have a copy of both.
Adrienne Stratford and Tony Cross have been ringing and monitoring the movements of Choughs in mid and North Wales for many years.. If anyone has a particularly specific query about the subject I will pass it on to them.