First time in my life I’ve ever seen this…AND…was able to get a photo of it ! Hummingbird all fluffed out / sprawled out in intense hot sun to drive lice out of its feathers. Have seen countless different birds do that over the years, and have several photos of them...but this was the first time I’ve ever been able to see a Hummingbird do it. Only had a medium Canon FDn 70-150/4.5 zoom on an NEX-7 handy but being aware of the old saying “if you snooze, you lose” I decided not to risk taking time to put on a larger telephoto…shot the tiny bird with the 70-150 maxed out at 150mm, then heavily cropped it up. And was glad to get what I got for a 1st time ever capture of a Hummingbird doing this.