I make the WS to show where I would "put" butterfly while framing that picture. What I did in PP was clone the butterfly (or rather his mirror image) to other place of the picture just to see if it will look better and I think it does.
I also add the frame because I think this kind of pictures need something that would kind of close them.
Hope you don't mind.
This is how the top of ants nest look when the ants leave the nest first time in the Spring. There's lots of them and sometimes you can't see the nest.
I didn't find any info why they are doing it. It seems all of them just bask in the Sun ;)