I suppose there are folks who think a bright red, blue, or screaming orange and black bird are the most beautiful birds in the world. Maybe. I am not saying they are wrong, the perception of beauty is a very personal thing. I am just saying that apparently they haven't seen a Green Heron.
Birds spend a lot of time in feather maintenance and this time of the year the herons, particularly the males, seem to be either sleeping, eating or fussing with their feathers. The first shot below almost seems like an invasion of privacy. The heron is accessing the oil of it's preen gland which it will rub on it's feathers. Students, the word for today is uropygial gland.