The average house fly lives on average 21 days. A flies wings beat 200 times per second. Flies don't grow. They are born full size. Flies have 4000 lenses in each eye.
Flies jump up and backwards when taking off.
Flies smell with their antennae Finally, one last fact. As you will see on the Historical Flypower page, many designs for fly powered aircraft have been presented to the unwary public. Most depict flies being glued to some form of fuselage by their feet. This is a sure way to disaster. As soon as the feet become stationary, the will stop flying.