Elk are very vocal at times and as far as the red urine this late in the season is it may be larch trees in the area that give the impression of blood being present in the urine, if there is a layer of snow and a deer pissses, it will come up as red as I have been fooled myself with deer /elk doing this during the season, but maybe some of the cows go late also, nothing is a norm. Good Luck, Bobby