Most out of one tangle I had was 7....40 flushes...with some refreshes...was not uncommon.
Very similar experiences here................35 years ago.
In our small block of "home turf" (about a section) there were TWO woodlots named "(landowner name)'s Grouse Woods" because it was a done deal. You walked through those two woodlots..........grouse were coming up. Period.
