In reply to dgp: they are native mountain and moorland ponies, they are made to live up in the harshest of conditions. My grandad owns most of them on the ogwen and bethesda side of the Carneddau range. Owns as in the one responsible for the yearly checks as stated.
Pretty tough creatures they are, stubborn to get down from the hill too! Unlike sheep, which have set grazing areas, the ponies roam so they're hard to keep track of. However they are monitored by all the farmers locally and they seem to cope by themselves.
cheers
Ioan Doyle and Katy