Podiceps nigricollis – GWYACH YDDFDDU – Scarce and irregular winter visitor. Not recorded between April and July.
Mathew (1894) stated that the Black-necked Grebe had been obtained several times in the Pembroke River while Lockley et al. (1949) add a further three occurrences, all from the Cleddau Estuary. The species has been reported in ten years since, all between 30 September and 20 March, save for one in the Nevern Estuary on 28 August 1958. Sightings are usually of single birds, but two have been seen together on three occasions. Recorded from various parts of the Cleddau Estuary, NevernEstuary, Newport Bay, Fishguard Harbour and St Bride’s Bay.