why do flies rub their hands together after they land?
In: 508
Shameless plug for /r/flies where I just became active.
Flys follow a stereotyped cleaning procedure. They clean themselves from tail to head passing the accumulated waste along as they do so. The rubbing together of the forelegs signifies the end of the process as they feel how big the dirt ball has gotten and rub it away. Depending on the SIZE of the ball they will start the sequence again or stop. It is their final check. They also occasionally run the process in reverse from head to tail.
Edit: Thanks for the gold kind redditor.
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