Thanks for that video. It reminded me of a day I was at the lake, years ago, laying in the sun with my eyes closed. When I felt a tickleing sensation on different parts of my body. I opened my eyes to see what it was and I was inside a mass of Monarchs. They were all over the sand and at the water's edge drinking. It was quite a sight.
.
I just layed there motionless, they stayed for hours. They were still there when I left. The next day they had gone.
.