Placing a prediction for Colorado/central rockys elk every year, batting .500 , I am.
With the September new moon @ the 20th , I'll wager early rutting activities with an earlier peak around the 4th of October and less vocal bulls by the end of muzzle loading season ~ 1st rifle.
Banking the wager (swag) on the September new moon intensifying the shorting days.
Would you give me your prediction on the rut in, around the Plains, Thompson Falls area of Montana? The wife and I will be there
Late October/early November.