This is an assumption on my part, however Egrets probably setup house the same as a Great Blue. After all, Egrets are members of the Heron family.
So…

Most likely this is a male working on the initial nest building. Showing off some of his skills.

And of course good looks.

That will only take him so far. After a quick show it’s back to moving sticks around.
Lol π Such fanfare and fastidious preparations, fancy feathers and all π€
I hope to catch some big mating dances soon.