It's summetime, so it's time for some foolishness!
This Cooper's Hawk seems to be giving us the old Linda Blair head spin from the movie The Exorcist.
The bird was feeding on a dead bird and suddenly began vomiting. While vomiting, the bird shook its head violently. With a very slow shutter speed due to a very low light situation, the body stayed in focus while the head gave us this effect.
Certainly not one for exposition purposes, but funny nonetheless!
Canon 5D Mark III with the 500L f4 lens handheld @ 1/160, f4, ISO 800, +2 2/3 exposure compensation. Very slight crop.
Cheers,
Mike