Archived posting to the Leica Users Group, 2014/01/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank Dernie wrote: >>> I wonder if it is a high frequency low amplitude version of the Kestrel's low frequency high amplitude talent. I will never forget seeing this demonstrated by a staff member at a raptor centre. He moved the hand on which a Kestrel was perched at least 3 inches in every direction and the kestrel's head remained stationary in space and its gaze did not flicker. It was amazing to see! <<< > >>> What continues to amaze me about hummingbirds is how they can keep their >>> head perfectly still while everything else is shaking at 60 Hz. >> >> >>how do they do it Doug, do they have a gyroscope in their heads? >> > Hummingbirds certainly operate at a high frequency! Doug Herr Birdman of Sacramento http://www.wildlightphoto.com