This is a young bird and while I labeled it an Egret it might also be a young Little Blue. The angle of the photographs makes an ID a little difficult.
In clear water the color of the legs would be obvious. Young Little Blues have green legs. Wading around all the duck weed makes everything green.
A slight green tint around the eyes could mean a young Egret.
Perhaps I just should have titled this a ‘White Bird’ and covered all options.