Maximum winter counts from all sites counted for the Wetland Bird Survey in Pembrokeshire. Data after 2000 includes the Teifi Estuary.
Main wintering sites for this species are the Cleddau Estuary, Bosherston Lakes, and Llys-y-fran Reservoir. However, large numbers can occur elsewhere, for example 50-60 in Fishguard Harbour in early 2015.
