maybe????

My west coast brother has a theory about the gravel path that's being built up in the river (see yesterday's pictures).  He suggests that they are improving the crawdad habitat.  Maybe so.  It makes as much sense as anything else. The gravel extends all the way under the bridge now and they are using a cute little plow to smooth out the gravel because the big scooper won't fit under there.  But thinking about those crawdads, I'm not sure what kind of sound crawdads make.  Do they make any sound?  Google says they do.  So now I'm wondering.  Every night during what I think of as high hot summer, July through September, I am treated to a symphony of sounds - buzzing, clicking, chirping, croaking - which goes on far into the night.  There are evidently lots of critters living along the river bank.  I have always supposed that they are frogs and crickets and maybe, sometimes, locusts. I suppose some of them could be crawdads.  So the next big question is do crawdads live on gravel?  So many unanswered questions.