On October 20th at about 09:00 I had a very distant view of what I thought were 6 Great White Egrets flying northeast over the sea past Ceibwr Bay and then heading over Cemaes Head towards the Teifi. They were looked for on the Teifi, but not found.
However, I now see on the Ceredigion blog that there are 6 Great White Egrets on the Dyfi, so I think I'll claim the ones I saw as a positive ID.