Walking on the ceiling?

[A.J. Davis]

In article <50ognl$9c9 at fang.dsto.defence.gov.au>, 
"Lance.Holden" <lah> wrote:
>I am trying to find the answer to a question proposed 
casually at work, the
>solution has evaded me despite the entire resources of the 
internet.
>
>The question was this..
>  " When a fly lands on the ceiling, does it flip in air or 
does it fly upside
>down (barrel roll) on the ceiling?"
>
>I would appreciate any answers to this question thank you.
>
>Lance Holden.
>

neither - they raise the front legs above their head, grap 
the support above them and swing the body forwards and up so 
that their other four legs can grip.  There's a Steve Dalton 
film of this with house flies i believe.


Andrew

Andrew Davis
University of Leeds, Yorkshire
England, LS2 9JT   UK

a.j.davis at uk.ac.leeds