From: rsw@therandymon.com   
      
   On 2016-09-10, JAB  wrote:   
   > On Sat, 10 Sep 2016 13:01:56 -0400, RS Wood    
   > wrote:   
   >   
   >>Wonder what it is?   
   >   
   > Barometric pressure sensor, if air pressure changes travel faster than   
   > a land mass disturbance, then [hypothesis] there would be a   
   > fluctuating change in pressure, which may startled them.  As the land   
   > mass drops, this would create a temporary low pressure drop, which   
   > would propagate some distance from actual area affected..   
      
   That could explain it.  Of course they could be sensitive to some deep   
   noise, oscillation in the air, something magnetic (my personal   
   favorite theory), lots of other things we haven't thought of.  Who's   
   to say our five senses are the only ones out there, and that animals   
   share them?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)