Question:

When a Fly alights on the ceiling, does it perform a loop or a roll in order to get upside down?

Options:

Loop

Roll

Different Technique

I don't know

Answer:

Given by Dr. M. M. Galloway of the Canada Biting Fly Center.

"A fly lands by raising its forelegs above it head, making contact with the ceiling and then bring its second and hind legs forward and up to the ceiling.  The fly thus flips with a landing."

"As soon as these two front legs contact the ceiling the fly will aerobatically tuck up the rest of its body and let momentum rotate it to the ceiling."