Well, looking at one of the spots on the pardalote’s head, it
seems to have travelled through roughly 45 degrees during the exposure. So a
complete rotation of its head, if anatomically possible, would take about 1/20th
second.
Nick Payne
From: Denis Wilson [
Sent: Wednesday, 7 May 2008 22:01
To: COG bird discussions; Voren
Subject: [canberrabirds] Re: booshkie from BIBY
I
have raised this before, but following up John Cumming's "cool
pictures" I wish to re-publish a borrowed photo (with the permission of
the photographer "Booshkie", a regular contributer to the Birds in
Backyards Forum).
It
is by way of a challenge to the photographers and the mathematically minded
amongst you, to see if we can work out how fast birds like the Sparrow and this
Spotted Pardalote male can shake their heads.
The
Pardalote conveniently has spots, which might possible be useful in working it
out.
"Booshkie"
has advised me that the camera shutter speed was set on 1/160th of a second.
A
very nice ultra-close-up shot is also attached, for reference.
