"Tom Allen" wrote in message
...

A bit mundane I know but perhaps you could have a look around your area
for evidence of agricultural activity such as recently cut crops. This
was a fairly common sound in one of our previous houses at this time of
year in fine weather. Or are you surrounded by concrete ? Perhaps some
rustic could suggest what crop is currently being harvested if any.

Then again tests of a thermo-nuetrionic resonator by the Ministry of
Nasty Goings On cannot be ruled out.

Tom


We were camping last week in Yorkshire and one night a combine was going
till after 11pm as the dew had not yet come down. My husband (ex-farm
worker) was amazed at how far on the crops were up there compared to here in
Kent -the weather has just been too dry here so nothing is ripe here yet
whereas there lots of barley was being cut and the wheat was not far off
iirc (I'm a city girl learning rural ways so these details might not be
exact!)