I am in Southern Scotland and sightings of great white egrets are very rare. The other day, I was sitting by the river - fairly restricted view - and I heard what I knew to be a swan flying upriver. I was very surprised indeed to see an unmistakable great white egret! As it's the same size and configuration as a grey heron (who I've never heard make a sound when flying) I'd be very interested to know if this 'whooshing' sound is common or, indeed, known at all. I've scoured various birding sites and haven't seen it mentioned.
Many thanks,
Heiton
Many thanks,
Heiton