In my experience timbering happens after the leaves fall. Most companies harvest in late december and early Jan. But, there is a shortage on lumber. I hope they are just staging, if that is the case I bet you have only a couple of weeks. Also, they might not be clear cutting, they might select cut... which means they will take select trees... not as bad. Also,on a long term basis... when a company clear cuts the regrowth is awesome for Deer! Hey, is this land located near crop land? If so, the timber equipment will sound like just another tracter. Except when they cut.