Geez-o-Pete - I think at least half our does are in heat! Last year I don't remember anyone going into heat until late August/early September - now they are mounting, rubbing, sniffing like crazy! And the buck - who is housed quite a way away these days, is stinking up a storm as well. We have one doe due to kid any day now. One of the yearlings kept sniffing her rear and then rubbing her face all over it. Do they secrete different pheremones when they are near kidding and do the other does associate it with a buck? It is so weird.