We were unable to look again this morning due to Dentist etc but it was in roughly the same place this afternoon with some Reed Buntings and I managed a few (not very good) photos. I'll give precise directions at the end of this post.
From Abereiddy follow the coast path north towards Porthgain. After about 10-15 minutes you reach Traeth Llyfn (the big beach). As you approach there's a field corner to your right and some blackthorn scrub lines the clifftop. The Bunting can be found in the scrub from this point and for another 50 metres. At this point there's a Blackthorn patch in a field corner to your right (there's a footpath going inland just behind it which gives an all-round view). This is another favourite point. The Bunting feeds in the stubble field but seems to stick to maybe 30 metres from the field boundary.