Great White Egret

I was walking from the little car park at Tomen y Mur near Trawsfynydd today. Approaching Llyn yr Oerfel I startled a large white wading bird from the margins of the lake. I was surprised to see an Egret here but even more surprised when I got my binoculars out. This was a heron sized bird with a long dagger shaped yellow bill and grey legs. Not a Little Egret. I had a quick scroll through the RSPB site and am pretty sure it was a Great White Egret. It was still there after I returned from the hills. It’s prompted me to join and post on this forum and I wondered if anyone else has come across this bird.