Why would it choose sand and not water to bathe in?
There two main reasons why some birds "dust" bath. Dust absorbs access oils and helps to maintain their feathers. Secondly, it helps to rid them of parasites.
I love this image
That's beautifully captured!
thankyou. the sparrow looks so vigorous and focused on the task.
Saw them doing this in the sand on small beach in front of my house today. A quick dip in the edge of the water first, then a snuggle down in warm sand. It gets rid of parasites.
A moment of magic!