This may be old hat to some, but I had never seen a Hummingbird's eyelid (or membrane - not sure what it is officially called). I thought this was pretty cool and a good example of 6 frames / sec improving your luck for capturing this kind of thing. Shot in Southern California in low light at dusk, handheld with a 70-200L 2.8. He came so close I had to back up to get MFD. Great fun.
Does anyone else have shots of their eyelids?